SellerThanks.com

Guides

How to reduce returns on eBay: a guide for UK sellers

By Brian, an eBay seller and the founder of SellerThanks · Updated October 2026

Every return costs you twice: the postage and your time, plus a sale you thought was finished. You can't stop every return (and buyers' rights to return items exist for good reasons), but most returns come down to a handful of causes you can do something about.

The usual reasons for returns

Only the last one is really out of your hands.

1. Make the listing impossible to misread

Size is the big one for small items. Our guide on buyers saying an item is smaller than expected goes into detail.

2. Catch mistakes before you post

A short message straight after payment that repeats what the buyer chose ("You've chosen the 100mm size in red") gives them a chance to correct a mistake before it's in the post. Fixing an order before dispatch costs nothing; fixing it after costs two lots of postage.

3. Pack for the worst journey

4. Set expectations on timing

5. Make it easy to come to you first

End every message with an invitation to get in touch if anything isn't right. A buyer who messages you can often be helped with a swap, a replacement or a partial refund, instead of starting a return.

Check what's working

In Seller Hub you can see your returns and the reasons buyers gave. If one listing keeps coming back for the same reason, that listing needs fixing, not the buyers.

Show every buyer the size they ordered, automatically. SellerThanks can attach a "How big is your item?" picture to your after-payment message: the photo from your listing, drawn at the size the buyer chose, next to a 50p coin. It's made for each order, for the exact style and size they picked.

Example size guide picture: a dog sticker drawn 70mm tall next to a 50p coin on A4 paper

Try it free for 7 days, no card needed Make a free picture now

More guides: What to write in an eBay thank-you message, with examples · How to get more eBay feedback without breaking eBay's rules · eBay's rules on messaging buyers, explained · eBay buyer says the item is smaller than expected? How to prevent it · How to show the size of an item in your eBay listing · eBay dispatch message templates, with tracking · SellerThanks vs 3Dsellers: a simple alternative for small eBay sellers