Price testing on eBay: how to run a fair test and read the result
In short
Price testing on eBay means changing one price setting on a group of listings while a similar group stays the same, then comparing profit over the same weeks. Test one thing at a time, avoid sale events, run long enough to see past normal weekly swings, and keep every test price above your profit floor.
Key takeaways
- Test one change at a time on a group of listings, with a similar group left unchanged.
- Run tests over the same weeks for both groups, and avoid sale events.
- Judge by total profit per group, with sales per view as a supporting measure.
- Keep every test price above break-even plus your minimum profit.
- Write down each test, its dates and its result so the lessons build up.
What is price testing on eBay?
Price testing on eBay is changing one pricing setting on some listings, leaving similar listings as they are, and comparing the results over the same period. The setting might be the price level, the markup, the price ending, or whether postage is free or charged. The point is to replace guesses about what buyers will pay with evidence from your own shop.
eBay does not offer a built-in tool that shows two prices for one listing to different buyers, so sellers test with groups of listings or with before-and-after periods. Both work if you are careful about what else changes at the same time. Most failed price tests fail not because the idea was wrong but because something else moved during the test, such as a supplier cost, a competitor or the season, and the result was credited to the price.
What can you test?
| What to test | Example | What you learn |
|---|---|---|
| Markup level | 15% against 20% on similar products | How sensitive sales are to price |
| Fixed element of markup | Adding a small fixed amount on cheap items | Whether cheap items can carry more |
| Price ending | .99 against round pounds | Whether endings matter for your buyers |
| Free against charged postage | £12.99 free postage against £9.99 plus £3.00 | How buyers react to the split |
| Threshold positioning | £19.99 against £20.49 | Whether a round-number filter affects you |
| Following deals | Following supplier deals down against holding | Whether chasing short-term drops pays |
Pick the test with the biggest likely payoff first. For most sellers that is the markup level on their busiest product group, because a small improvement there is multiplied by the most sales.
Testing free against charged postage
The postage test needs particular care with the arithmetic. Keep the total the buyer pays the same in both versions, for example £12.99 with free postage against £9.99 plus £3.00 postage, so the only difference is how the price is presented. Remember that percentage fees and promoted listing fees can be charged on the total sale amount, postage included, so the fees should come out about the same either way. If the totals differ, you are testing price level and presentation at once, and the result will not tell you which mattered.
How do you set up a fair price test?
- Choose one change. Only the price setting differs between the groups. Titles, photos, postage terms and promotion stay the same.
- Build two similar groups. Similar products, similar prices, similar recent sales. Split them so neither group has all the best sellers.
- Record the starting point. Note each group's sales, views and profit over the previous few weeks.
- Apply the change to one group. Leave the other as the comparison.
- Run both over the same weeks. Both groups face the same season, paydays and competitors.
- Keep the floor. No test price goes below break-even plus your minimum profit.
Testing in a small shop
With a handful of listings, two groups may be too small to compare. Use a before-and-after test instead: run the current price for a few weeks, then the test price for the same number of weeks, then, if you can, switch back. A result that appears when you change the price and disappears when you change it back is far more convincing than a single before-and-after comparison.
How long should a price test run?
Long enough to see past normal ups and downs. Sales on eBay vary from week to week for many reasons, and a short test can easily pick up noise instead of a real effect.
- At least two normal weeks, longer for slow-selling products.
- Whole weeks, so weekends and weekdays are both included.
- Not across a sale event. Black Friday, Prime Day and the run-up to Christmas change demand and costs; they make any test unreadable.
- Not across a big change elsewhere. If you change your returns policy or handling time mid-test, start again.
How do you read the result?
The main measure is total profit per group over the test period: sales multiplied by profit per sale, after every fee. A higher price that loses a few sales can still win; a lower price that wins many sales can still lose.
A hypothetical example
Example: suppose you split 40 similar kitchen products into two groups of 20. Group A keeps a 15% markup; group B moves to 20%. Over four weeks, group A sells 120 units with an average profit of £2.10, a total of £252. Group B sells 105 units with an average profit of £2.85, a total of about £299. Group B sold fewer units but earned about £47 more. If group B had sold only 85 units, its total would have been about £242, and the higher markup would have lost. These figures are hypothetical, for illustration; your own results will differ.
Supporting measures
- Sales per view: how often a view becomes a sale. A price change that lowers it suggests buyers notice the price.
- Views: a change in views may point to something other than price, such as search position or season.
- Returns and cases: a cheaper price that attracts more returns may not be cheaper in the end.
What to do after a test
When a test ends, act on it and move on. If the test setting won, apply it to the comparison group and to similar products, then watch the first few weeks to make sure the gain holds at a larger scale. If it lost, return the test group to the original setting. If neither clearly won, keep whichever earns slightly more and pick a different question for the next test. Then plan the next one: a running series of small tests, each building on the last, teaches you far more than a single large experiment.
What spoils a price test?
- Changing more than one thing. You cannot tell which change mattered.
- Uneven groups. One group with all the best sellers wins for reasons that have nothing to do with price.
- Cost changes during the test. If your repricer changes prices because supplier costs moved, the groups no longer differ only by the test setting. Note any cost-driven changes and allow for them.
- Stock-outs. A listing at zero quantity for a week drags its group down. Exclude it or extend the test.
- Stopping early. A strong first week often fades. Run the full period.
- False discounts. Never show a was price or a discount that is not genuine to make a test price look better. Prices and descriptions must be honest.
How does price testing work with a repricer?
A cost-plus repricer recalculates prices from each new cost reading, so a test made by typing a price by hand will be overwritten. Run the test through the repricer's settings instead: a different markup or ending on the test group, using per-listing overrides, with the same floor on both groups. That way the test setting survives every reprice, and both groups still follow their costs.
Dropizon reprices with your own formula, including percentage or fixed markup, optional .99 endings, a minimum profit floor and per-listing overrides, so a test group can carry a different setting from the comparison group. The eBay repricer page explains the settings, and the guide to raising prices on eBay listings covers the step-by-step approach for single listings.
If you source from a retailer, testing prices does not change eBay's sourcing rules. eBay allows dropshipping from a wholesale supplier, but listing an item and then buying it from another retailer or marketplace that ships directly to your buyer is not allowed under eBay's drop shipping policy. You stay responsible for delivery and your buyer's satisfaction.
A price testing checklist
- Pick one setting to test, starting with your busiest product group, where gains multiply.
- Build two similar groups, or plan a before-and-after with a switch back.
- Run at least two whole normal weeks, outside sale events, and do not stop early.
- Keep every test price above your floor, in both groups, for the whole test.
- Judge by total profit per group; use sales per view as support.
- Note cost changes, competitor moves and stock-outs during the test, and allow for them when you read the result.
- Record each test and its result, and apply what you learn to similar products.
Frequently asked questions
Can I test two prices on the same listing at the same time?
Not on one listing, because buyers see one price at a time. Use two groups of similar listings instead, or test one price after another on the same listing and accept that the periods differ.
How many listings do I need for a fair test?
Enough that a few unusual sales do not decide the result. Small shops can still test by running for longer, or by repeating the test with the groups swapped.
Should I tell buyers I am testing prices?
There is no need to announce it, but every price must be genuine and the listing must describe the item accurately. Never show a false was price or a fake discount.
What if a test makes no difference?
That is a useful result. It tells you the setting you tested is not what drives sales for those products, and you can keep whichever version earns more.