Quick Answer: eBay Terapeak is eBay’s built-in product research tool, now known as Product Research. It helps sellers analyze historical sales data, selling prices, demand, and competition to make more informed sourcing and pricing decisions. — not a third-party service. eBay acquired Terapeak in 2017 and folded it directly into Seller Hub, where it’s now officially called Product Research. It’s available through Seller Hub for eligible sellers and shows up to 3 years of real sold-item data — actual sold prices, sell-through rates, and sales trends, depending on category and available data — so you can research a product’s demand before you buy or list it.
Important Accuracy Note.
Terapeak is NOT a third-party tool. It is eBay’s own first-party product research service, built directly into Seller Hub. eBay acquired Terapeak in 2017, and inside Seller Hub it’s now officially labeled Product Research — though many sellers still search for it by its original name, Terapeak.
Key Takeaways
Terapeak is eBay’s own tool — now called Product Research inside Seller Hub, not a third-party service
Product Research is generally available through Seller Hub for eligible sellers. Availability may vary by account type and region. Sourcing Insights typically requires a Basic Store subscription or higher.
It shows up to 3 years of real sold-item data, depending on category and available data, including many accepted Best Offer prices
Sell-through rate is a useful demand indicator, but it should be evaluated alongside total sales, current competition, selling prices, and potential profit. Use the rate reported by eBay Product Research rather than calculating it from current active listings alone. Available on both desktop (Seller Hub) and the eBay mobile app, including barcode scanning for in-person sourcing.
Table of Contents
What Is eBay Terapeak?
How to Use Terapeak for Product Research
Is Terapeak Free?
How to Use Terapeak Step-by-Step
Understanding the Data: Sold vs Active
Key Metrics Explained
Terapeak on Mobile
Best Practices for Product Research
Common Mistakes
Frequently Asked Questions
Related Guides
Every experienced eBay seller eventually learns the same lesson: sourcing based on a gut feeling is expensive. An item that “looks like it should sell” can sit in inventory for months, while a boring-looking item with strong sell-through data moves in days. The difference between those two outcomes usually comes down to whether you checked the data first — and that’s exactly what Terapeak, now called Product Research, is built for.
This guide walks through what Terapeak actually is, how to access it, and how to use it step-by-step to research products before you buy or list them.
What Is eBay Terapeak?
Terapeak started as an independent research company before eBay acquired it in 2017 and integrated it directly into Seller Hub. Today, it’s simply part of eBay’s own toolset — not something you sign up for separately or pay a third party for. Inside Seller Hub it’s labeled Product Research, and it analyzes real transaction data from millions of eBay sales to show what’s actually selling, at what price, and how fast.
How to Use Terapeak for Product Research
Most sellers open Terapeak, type a product name, look at the average price and close it again. That’s using maybe a tenth of what it tells you.
Product research is really one question: is this worth listing at all? Terapeak answers it if you read the right numbers.
Start with the right search
Search the product the way a buyer would, not the way a supplier lists it. “Nike Air Max 90 mens white” rather than “AM90 WHT UK9 BNIB”.
Then set your filters before reading anything:
Date range — 90 days for most items, 365 for seasonal ones
Site — set to eBay.co.uk if you sell in the UK. US data will mislead you on price.
Condition — match what you’d actually be selling
Format — Buy It Now and auction behave differently, so look at them separately
Always select the eBay marketplace relevant to your target buyers when comparing sold prices. Prices can vary between the UK and US due to differences in demand, currency, shipping costs, competition, and product availability. Avoid relying on sales data from another marketplace without considering these differences.
The four numbers that matter
Terapeak shows a lot. These four decide whether you list.
Average Sold Price
Average sold price is a useful pricing reference, not a guaranteed selling price or fixed maximum. Compare recent sales, condition, shipping charges, and the sold price range.
Sell-Through Rate
Shows relative sales activity over the selected research period. Use eBay Product Research’s reported rate alongside total sales, competition, and potential profit.
Total Sold
Shows recorded sales volume during your selected period. Compare shorter and longer date ranges to understand demand, but don’t treat historical sales as a guarantee of future orders.
Average Shipping Charged
Helps you understand shipping charges on comparable sales. Compare the buyer’s total cost, delivery options, and your actual shipping expenses before setting your price.
Reading sell-through rate properly
| Sell-Through Rate | How to Interpret It |
|---|---|
| Under 30% | May indicate slower sales relative to listings; investigate demand and competition. |
| 30–60% | Shows moderate relative sales activity; compare similar products before sourcing. |
| 60–90% | May suggest stronger relative sales activity, but profitability still needs checking. |
| Over 90% | Indicates high relative sales activity; check sample size, competition, and data quality. |
Note: These percentage ranges are illustrative examples, not official eBay benchmarks. Interpret sell-through rates alongside total sales, competition, and potential profit.
Is eBay Terapeak Free?
Product Research is available through Seller Hub for eligible eBay sellers. Features and availability may vary by account type and region. The related tool, Sourcing Insights (which shows category-level opportunity data like search-to-listing ratios), typically requires a Basic Store subscription or higher. If you’re only using Product Research to check sold prices and sell-through rates on specific items, a Store subscription usually isn’t required.
How to Use eBay Terapeak Step-by-Step
Step 1 — Start With a Specific Search
Search a specific product rather than a broad category. “Portable dog water bottle” returns far more usable data than “pet accessories” — a focused search makes it easier to judge realistic sold prices and actual competition.
Step 2 — Apply Filters
Narrow results using filters like category, item condition, price range, buyer/seller location, and product identifiers (UPC, ISBN, MPN). This keeps the data relevant to what you’re actually planning to sell.
Step 3 — Check the Sold Tab, Not Active
Active listings show current asking prices and competing offers, while sold listings provide historical transaction data for pricing research. eBay Product Research may also show accepted Best Offer prices where available. Review both sold and active listing data to evaluate demand, pricing, and competition rather than relying on either one alone.
Step 4 — Review the Core Metrics
Review the average sold price, sold price range, sell-through rate, and total items sold for your selected research period. eBay Product Research provides access to up to three years of historical sales data, subject to marketplace, category, and data availability. Compare different date ranges to identify changes in demand and pricing rather than relying on a single average.
Step 5 — Make a Sourcing or Pricing Decision
Use what you’ve found to either validate a product you’re already sourcing, or decide against it if the data shows weak demand or oversaturated competition.
Understanding the Data: Sold vs Active
When researching products on eBay, understanding the difference between active and sold listings helps you evaluate both competition and historical demand. Use the two types of data together before making a pricing or sourcing decision.
| Data Type | What It Shows | Use It For |
|---|---|---|
| Active Listings | Current asking prices and competing offers. | Evaluating current competition and pricing. |
| Sold Listings | Historical sales data, including accepted Best Offer prices where available. | Researching selling prices and evaluating demand. |
Important: Sold data reflects historical transactions and does not guarantee future sales. Compare sold prices, active competition, item condition, and potential profit before sourcing inventory.
Key Metrics Explained
Average Sold Price — The average selling price of matching items recorded in eBay Product Research for the selected period. Check whether shipping charges are included in the displayed metric, and compare item condition, sale format, and recent transactions before using the average to set your listing price. Sold Price Range — The lowest and highest recorded selling prices among matching transactions in your selected research period. This range can help identify price variations, but unusually high or low sales may reflect differences in condition, accessories, listing format, or other factors. Compare similar items rather than relying on the extremes alone.
Sell-Through Rate — A metric showing how sales compare with listings over a selected period. In eBay Product Research, use the sell-through rate displayed by the tool rather than assuming that dividing total sold by the current number of active listings will reproduce eBay’s calculation. Interpret this metric alongside total sales, competing listings, and the selected date range.
Total Sold — The number of items recorded as sold in eBay Product Research for your selected search criteria and date range. This metric helps you understand historical sales volume, but it does not guarantee future demand or predict how many units your own listing will sell. Compare it with competition, pricing, and seasonal trends. Average Shipping Cost — Shows the average shipping amount charged on matching transactions, where this data is available. Compare shipping charges alongside selling prices to understand the buyer’s total cost. Remember that the amount charged for shipping may differ from the seller’s actual postage and packaging expenses.
What Counts as a Good Sell-Through Rate?
There is no single sell-through rate that guarantees a profitable product on eBay. A higher sell-through rate may suggest stronger demand relative to available listings, but the meaning varies by category, season, price, and the selected research period. Compare similar products using the same filters, and review total sales, competition, selling prices, and estimated profit before making a sourcing decision.
For example, a £40 product with a 70% sell-through rate may indicate stronger relative demand than a £200 product with a 20% sell-through rate. However, the higher-priced product could still be more profitable depending on sourcing costs, fees, competition, and sales volume. Evaluate both demand and potential net profit before choosing which product to sell.
Checking the competition
Before committing, look at who you’d be competing with.
Check how many active listings compete with your product, but interpret that number in relation to demand. A market with 400 active listings may still offer opportunities if sales volume is strong, while a market with only 20 listings may be difficult if very few items sell. Compare competition with recent sales, pricing, and product condition before making a sourcing decision. Review the experience and selling activity of competing sellers where reliable information is available. Established business sellers may have advantages in pricing, inventory, shipping, and customer service, but account type alone does not determine how competitive a seller is. Focus on the quality of competing listings, their prices, delivery options, and relevant sales data.
Is one seller dominating? Look for signs of seller concentration when researching competition. If a small number of established sellers appear to account for a large share of comparable sales, investigate their pricing, product quality, shipping options, and seller reputation. However, do not assume they have a sourcing advantage without additional evidence.
Turning research into a sourcing decision
eBay Terapeak on Mobile
eBay Product Research may also be available through the eBay mobile app for eligible sellers. Open the Selling section and look for Product Research or related seller tools. The exact navigation and available features can vary by app version, marketplace, and account eligibility. Where supported, barcode scanning can help you identify products and research comparable sales while sourcing inventory. If you cannot find Product Research in the app, try accessing it through Seller Hub in your web browser.
Best Practices for Product Research
Use specific, narrow searches rather than broad category terms
Always check the Sold tab, not just Active listings
Compare short and longer time windows rather than relying on a single date range
Cross-check sell-through rate alongside average sold price — a high price with almost no sales isn’t a real opportunity
Product Research can reveal actual transaction prices, including many accepted Best Offer sales, which are often not visible in standard eBay sold listings — see our eBay Best Offer Guide for how that negotiation process works.
Common Mistakes
Pricing based on Active listings instead of what actually sold
Searching too broad a category and drawing conclusions from noisy data
Ignoring sell-through rate and focusing only on price
Relying on a single date range instead of comparing trends over time
Forgetting to factor in eBay’s fees when judging whether a “good sold price” is actually profitable — run it through our eBay Fee Calculator and eBay ROI Calculator before committing to sourcing.
Using Terapeak as a Sales Estimator
eBay Product Research provides historical sales data that can help sellers evaluate product demand and estimate past sales activity. However, it is not a tool for predicting guaranteed future sales. Use its historical data alongside competition, selling prices, seasonal trends, and potential profit when deciding whether to source or list a product.
How to estimate monthly sales volume
To estimate average historical monthly sales volume, divide the total number of items sold by the number of months in your selected research period. For example, three items sold over 90 days represent approximately one recorded sale per month across the matching results. This is a historical market average, not a prediction of how many sales your own listing will receive. For faster-moving items, set the date range to 30 days. For seasonal products or slower niches, use 90 or 365 days to smooth out fluctuations.
Sell-through rate as a demand signal
Sell-through rate is a useful indicator of product demand, but it should not be treated as a guaranteed demand score. Use the sell-through rate reported by eBay Product Research and compare it with total items sold, competing listings, average selling prices, and seasonal trends. A higher rate may indicate stronger sales activity, while a lower rate can suggest weaker demand or greater competition. There is no universal percentage that guarantees a profitable product. For example, a £40 item with a 70% sell-through rate may have stronger relative sales activity than a £200 item with a 15% sell-through rate. However, this does not automatically make the cheaper product a better sourcing choice. Compare expected net profit, sourcing costs, competition, and inventory turnover before deciding which item offers the better opportunity.
Estimating your own sales potential
Historical sales data can help you evaluate market demand, but it cannot reliably predict how many sales your own listing will receive. For example, if 50 items sold across 20 sellers in 30 days, those sales may not have been distributed equally. Established sellers may receive a larger share of orders. Use this information as a demand indicator rather than a guaranteed sales forecast, and consider pricing, listing quality, seller reputation, and competition. Use that estimate alongside our eBay ROI Calculator to decide whether the margin justifies the sourcing cost.
CTA
Found a promising product in your research? Run the numbers through our eBay Fee Calculator and eBay ROI Calculator before you commit to sourcing it.
Frequently Asked Questions
What is Terapeak eBay?
Terapeak is eBay’s own first-party product research tool, now called Product Research inside Seller Hub. It shows real sold-item data — prices, sell-through rates, and trends — to help sellers make sourcing and pricing decisions.
How to use Terapeak on eBay?
Log into Seller Hub, go to the Research tab, select Product Research, and search by keyword or product identifier. Filter results and focus on the Sold tab to see real transaction data.
What is Terapeak on eBay?
It’s the research tool eBay acquired in 2017 and built into Seller Hub — officially rebranded as Product Research, though the name Terapeak is still widely used by sellers.
What is eBay Product Research?
eBay’s current official name for the tool formerly known as Terapeak. It provides historical sold-listing data (up to 3 years, depending on category and available data) to help sellers research products.
How to find eBay Terapeak ?
Seller Hub > Research tab > Product Research on desktop, or Selling tab > Seller Tools > Product Research in the mobile app.
Do I need a Store subscription to use Terapeak?
Product Research is generally available through Seller Hub without a separate Store subscription, though availability can vary by account type and region. Only the related Sourcing Insights tool typically requires a Basic Store subscription or higher.
Does Terapeak show Best Offer prices?
Product Research can reveal actual transaction prices, including many accepted Best Offer sales, which are often not visible in standard eBay sold listings.
How far back does Terapeak’s data go?
Up to 3 years of historical sold-listing data, depending on category and available data.
Related Guides
Related Guides
The quick method when you don’t need full Terapeak data.
Take Terapeak’s average sold price and see if the margin works.
Turn the keywords you find into titles and item specifics that rank.
Product research matters even more when you don’t hold the stock.
Seasonal demand data is where Terapeak earns its keep.
Conclusion
Terapeak — or Product Research, as eBay now calls it — turns sourcing from a guessing game into a data-backed decision. The tool itself won’t source or list anything for you, but it gives you the evidence: what’s actually selling, at what real price, and how fast. Pair that with a quick profit check before you commit, and you’ve replaced gut instinct with a repeatable system.
Author Box
Written by Muhammad Usman
eCommerce & SEO Specialist with 5+ years of experience in eBay, Amazon, Etsy and TikTok Shop. This guide is based on official eBay documentation and practical seller experience.
Fact-Checked Box
This guide has been reviewed against official eBay Seller documentation and updated for 2026. Terapeak/Product Research features, subscription requirements and data history may vary slightly by marketplace and account type.