Finding products on Amazon that sell on eBay at a profit, and the ones to leave alone.
Amazon Prime delivery estimates and eBay handling time measure different things. eBay's handling time is how long you take to dispatch; the delivery date eBay shows adds the carrier's transit time. Set a handling time from the slowest realistic delivery estimate you see, not the fastest, so the date on your listing is one you can keep.
Amazon price tracking for eBay sellers means recording the live Amazon price, stock, seller and delivery estimate for every product you list, then updating the eBay price from each new reading. Check fast-moving items often, quiet items less often, and hold any reading that looks wrong instead of pushing it.
Amazon price history shows how a product's price has moved over weeks or months. Before setting an eBay price, find the product's normal range, mark the deal dips and stock-out spikes, and price from the typical cost rather than today's low. Then set a margin wide enough to absorb the usual swings.
A wrong Amazon price comes in two kinds: a genuine Amazon price error, where an offer is listed far below or above its normal price, and a misread, where your tracker picks up the wrong number. Both can push a loss-making price to eBay. Compare every reading with the product's history and hold big swings for review.
When the Amazon product you price from goes out of stock, set your eBay listing's quantity to zero straight away rather than leaving it buyable. Keep the listing if the item usually comes back, end it if it is discontinued, and restore the quantity only after a fresh reading shows new stock you can rely on.
Amazon chooses the offer it shows for the delivery address on the page, so a different postcode can show a different seller, price, delivery charge and delivery date. For consistent price tracking, pick one realistic delivery postcode, make sure every reading uses it, and treat readings taken at another address as unreliable.
The true cost of an Amazon purchase is the item price plus any delivery charge, plus sales tax where it applies, minus nothing you cannot count on. Optional fast delivery fees are not part of the normal cost. Build your eBay price on this full figure, read at your own postcode, or your margin shrinks on every order.
The Amazon buy box is the panel on a product page with the main Add to Basket button. It shows one offer chosen by Amazon from all the sellers of that product. For eBay sellers who price from Amazon, the buy box is the price, seller, delivery charge and delivery date you are really comparing against.
AliExpress usually offers lower unit prices but slow international delivery, import VAT and more quality variation. Amazon offers fast UK delivery and familiar products at retail prices that leave thinner margins. For both, eBay rules out buying from another retailer or marketplace to ship directly to your buyer, so either works best as a source of stock you hold.
AliExpress delivery time to the UK depends on the shipping method the seller uses, customs clearance and the season, and it is far longer and less predictable than UK delivery. eBay sellers should treat it as lead time for restocking, not as delivery time for their buyers, and plan reorders so UK stock never runs out.
AliExpress suits eBay sellers who want small quantities at fixed prices with simple international delivery, which makes it good for samples and test batches. Alibaba is a business-to-business platform where you negotiate with manufacturers and wholesalers, usually with minimum order quantities, lower unit prices and options to customise. Many sellers test on AliExpress and scale on Alibaba.
