An eBay repricer that prices from your Amazon cost
Last updated 26 October 2026
An eBay repricer changes your listing prices automatically so you do not have to. Dropizon is a cost-based eBay repricer for sellers who source from Amazon: it reads the live Amazon price in your own browser, applies your markup formula, checks the result against a set of guards and pushes the new price and quantity to eBay, with a reason recorded for every change and every hold.
What is an eBay repricer, and which kind is Dropizon?
Repricers come in two broad kinds. A competitor-based repricer watches other sellers on the same marketplace and moves your price to win or match the cheapest offer. A cost-based repricer starts from what the item costs you and adds the margin you want. Dropizon is the second kind, because for an Amazon to eBay seller the cost changes all the time: Amazon prices move during the day, sale events come and go, and a buy box can switch seller. A listing that was profitable this morning can lose money this afternoon if nothing re-reads the cost.
So the question Dropizon asks for every listing is simple: what would this item cost me on Amazon right now, and what eBay price gives me my margin after eBay's fees? The reading comes from the Amazon price tracker in the Chrome extension; the arithmetic and the guards run on the server.
How does Dropizon calculate an eBay price?
One function decides every price, whether it comes from the scheduled run, the manual button, the after-sale reprice or a full catalogue pass. The steps are in the documentation, and in short:
- Base is the Amazon price just read plus your shipping cost.
- Profit is a percentage of the base or a fixed amount, plus any extra percentage or fixed amount you add.
- Minimum profit is a floor, not an addition. It only takes over when the profit above falls short of it.
- Gross up for the fee: price = (base + fixed fee + profit) ÷ (1 − fee% ÷ 100). Dividing makes eBay's percentage part of the buyer's price instead of coming out of your margin.
- Round to a .99 ending, or to an ending you choose per listing, if you want one.
An illustration with made-up settings (they are not eBay's actual fees, which depend on your category and account):
| Step | Example |
|---|---|
| Amazon price read | £10.00, free delivery, so the base is £10.00 |
| Profit at 20% of base | £2.00 |
| Fee settings | 13% plus £0.30 per order |
| Price before rounding | (10.00 + 0.30 + 2.00) ÷ 0.87 = £14.14 |
| With a £3.00 minimum profit | (10.00 + 0.30 + 3.00) ÷ 0.87 = £15.29 |
The fee percentage moves the price more than any other setting, which is why it is worth setting carefully. If you prefer, an optional automatic eBay fees switch learns the fee eBay really charged per category from your own orders and uses it instead of a typed figure. It is off until you turn it on.
Which settings can I change per listing?
The account's formula is the default. Any listing can carry its own values, set in its drawer or by bulk edit, and the price breakdown shows which ones applied:
- Markup, markup type and fixed amount, for a product that needs a different margin.
- Default quantity and delivery limit for that listing.
- .99 rounding on or off, or a cents ending of your own.
- Sales-based pricing: rules that raise a listing's price by a percentage or an amount while it sells and lower it while it does not. The adjustment sits inside the same formula, and a decrease can never go below your minimum profit.
- Post-sale uplift: an optional small rise (2% by default) when an item has just sold.
What stops a bad price going live?
A repricer that pushes whatever it reads is a liability on a live catalogue. Dropizon puts guards between the reading and eBay; most release themselves when the cause clears, and the rest wait for your decision on the Price Review page. The full table is in the guards reference.
| Guard | What it does |
|---|---|
| Currency guard | Rejects a reading that is not in the marketplace's currency. It means the browser's delivery location is wrong, so the number is meaningless. |
| Price circuit breaker | Holds a proposed price below the floor (0.99) or above the ceiling (1,500) and, if you enable it, a swing larger than the percentage you set. You approve, reject or push the price only. |
| Minimum change | Skips changes under 3% by default, on purpose. |
| Price too old | Waits for a fresh reading when the latest one is more than 24 hours old. |
| Wrong product served | Refuses a page where Amazon served a different ASIN from the one asked for, so a variant's price never lands on your listing. |
| Stock guards | Out of stock, no featured offer, used-only, pre-order or a dead page set eBay quantity to 0, restored automatically when Amazon has it again. |
How fast does a new price reach eBay?
Dropizon uses three eBay routes and prefers the ones with large allowances, because eBay's Trading API is one shared pool of 5,000 calls a day for the whole application (see how a change reaches eBay):
| Route | Used for |
|---|---|
| Inventory API | Listings under eBay's Inventory model, 25 offers per bulk call. |
| Feed API | Bulk price and quantity files, confirmed by eBay before Dropizon's copy is updated. |
| Trading API | Everything else, one call per listing. |
On an account with batching on, the repricer records decisions in a queue and a drain sends them in bulk every minute; a decision that waits too long is dropped and decided again from the current reading rather than sent stale. A sale gets the highest priority: orders are synced every 2 minutes, the sold item is read first, and the after-sale reprice pushes price and restock in one call. The documentation gives two to four minutes as the typical time from order to new price.
How do I know why a price changed?
Every decision the repricer makes is written to an audit log with its reason: pushed, under threshold, circuit breaker, currency rejected, out of stock, price too old. The Inventory page has a Reason column that says in one sentence why each listing is in its state, and the extension's Price updates sheet lists each reading with its outcome (pushed, up to date, held, or not pushed and why), exportable as CSV. The Processing page shows the latest result for every live listing, success or the reason it failed, with one click to retry the failures, and the eBay Sync Log lists every price and quantity update sent to eBay.
Behind that, a loss guard checks every order for profit every five minutes. When an order lost money it finds the cause from the data already kept (a stale reading, a refused push, a pause, the listing's own settings), applies the fixes that cannot hurt, and writes down the ones that are your call as "needs you" on the Negative Orders page.
Who is Dropizon's repricer for?
A good fit
You list Amazon products on eBay, you want each price to follow the real Amazon cost with your margin on top, and you want to see the reason behind every change. Catalogues from a few hundred to tens of thousands of listings, on one or several eBay accounts.
Not a fit
You hold your own stock and want to undercut other eBay sellers, or you source from several suppliers and channels. A competitor-based repricer, or a multi-supplier platform such as the one in our Dropizon vs AutoDS comparison, will suit you better.
The repricer works hand in hand with the rest of Dropizon: the price and stock tracker supplies the readings, multi-variation listings are priced child by child, and order automation takes over once something sells.
Questions sellers ask about eBay repricing
Does Dropizon match or undercut other eBay sellers?
No. Dropizon is a cost-based repricer: it prices each listing from the Amazon cost you would pay today, plus your shipping, profit and eBay fee. It does not lower your price to beat other eBay sellers, so a busy category cannot drag you below your own minimum profit.
Which eBay sites does the repricer work on?
eBay US, UK, Germany, Australia, Canada and more. Each eBay account is paired with one Amazon marketplace in the same country, so an eBay UK listing is priced from amazon.co.uk in pounds and an eBay US listing from amazon.com in dollars.
Will it change my price by a few pence every hour?
No. By default a new price is pushed only when it moves by at least 3%, so small drift does not spend eBay API calls or unsettle buyers. A manual reprice, which you ask for by name, ignores that threshold.
Can the repricer lower a price when an item is not selling?
Yes, with sales-based pricing rules that nudge a price up while a listing sells and down while it does not, within limits you set. A decrease always stops at your minimum profit.
Does Dropizon need my eBay password?
No. You connect eBay through eBay's own consent screen and Dropizon works with the token eBay issues, through eBay's official APIs. You can revoke that token from your eBay account at any time.
How is the repricer priced?
Plans are priced by the number of listings Dropizon reprices, with every feature on every plan and as many eBay accounts as you connect. The current prices are on the plans page.
Try the repricer on your own catalogue. Connect an eBay account, install the extension and watch the first readings turn into prices on the Processing page. Every plan has every feature; you choose the size of the catalogue.
Dropizon is an independent tool and is not affiliated with eBay or Amazon. Sellers are responsible for compliance with each marketplace's policies, including eBay's drop shipping policy.