Crosslist from eBay to Square: Put Your eBay Stock in a Square Online Store
For eBay sellers who already take payments on Square: what a Square Online store costs, how it shares stock with your till, and what FLUF does on each side.
7 days for £1, then from £9/month.
- This route suits eBay business sellers who also run a shop, stall or studio on Square and want their eBay stock on their own website.
- A Square Online store starts at £0 a month in the UK. You pay 1.4% plus 25p on UK cards, and paid plans from £20 add a custom domain at no extra cost.
- Square Online shares one item library with your Square till, so an item sold at the counter comes off the website too.
- FLUF sees eBay sales and drops the Square stock. A Square sale you mark sold in FLUF, which then ends the eBay listing.
Who should add Square
Square is not a marketplace. Nobody browses Square looking for your stock. What it gives an eBay seller is a website of their own, fed by the same item library as the card reader on the counter. If you sell vintage on eBay and at a Saturday market, or run a small shop and list the slow movers on eBay, a Square Online store puts everything in one place under your own name, with no final value fee on the sales it brings in.
The eBay sellers who fit are the ones already taking payments on Square in person. If you have no shop or stall, Square Online is one option among several for a website, and the shared till is the reason to pick it.
How the costs compare
eBay’s UK business fee page lists a final value fee of 11.9% in Clothes, Shoes & Accessories, with other rates by category, and eBay Shop subscriptions at £27, £77 and £437 a month. On a £60 jacket you pay about £7 to eBay before postage.
Square’s UK Square Online page lists a £0 plan with paid plans from £20 a month, and a processing fee of 1.4% plus 25p on UK cards and 2.5% plus 25p on other cards. All paid plans include a custom domain that Square values at £17.95. The same £60 jacket sold on your Square site costs £1.09 in card fees. Square’s US pricing puts online card processing at 3.3% plus 30 cents on the £0 equivalent and 2.9% plus 30 cents on Square Plus.
The saving is real, and it only counts on sales you would have made anyway. eBay brings buyers; your website does not. Most sellers who run both use the Square site for repeat customers, the market crowd and social media, and keep eBay for the search traffic.
eBay habits to change on Square
- Do not link to your site from eBay. eBay’s listing policies restrict links that take buyers off eBay, so the website is for your own customers, not for your eBay listings.
- One item library. Square Online and the Square till share the same items. An item sold at the counter is gone from the website, and a website sale updates the till. That is the point of the pairing.
- You handle the shipping. eBay wraps postage into the checkout. On Square Online you set your own rates and buy your own labels.
- Your customer data is yours. Square gives you the buyer’s email and order history on your own site. eBay does not.
What FLUF does on each side
| eBay | Square | |
|---|---|---|
| How you connect | Sign in with your eBay account | Sign in with your Square account |
| Bring existing listings into FLUF | Yes | Yes |
| FLUF sees a sale here | Yes | No, mark it sold in FLUF |
| FLUF ends the listing here when it sells elsewhere | Yes | Yes, it drops the stock |
| Relisting and offer management | Included from the Seller plan upwards | No |
In practice an eBay sale looks after itself: FLUF records it and the Square stock drops, on the website and at the till. A Square sale, online or at the counter, needs one click in FLUF, after which the eBay listing ends. For a one-off item, do it before you hand the bag over.
Getting started
- Connect eBay by signing in, and bring your listings into FLUF.
- Connect Square by signing in.
- Choose the items for your site. Start with the stock you also sell in person.
- Check the price and category on the first few Square items, then publish the rest.
What FLUF costs
Crosslisting and inventory sync are on every plan. Start with 7 days for £1, then from £9/month, then plans from £9/month. Relisting and offer management on eBay are included from the Seller plan upwards.
| Plan | Monthly | Crosslisted products |
|---|---|---|
| Starter | £9/month | Unlimited |
| Pro | £29/month | Unlimited |
| Super Seller | Custom pricing — tell us what you need | Unlimited |
Sources
- Square UK: Square Online (plans, processing fees, custom domain)
- Square US: pricing (online processing fees)
- eBay UK: fees for business sellers
Sources checked September 2026.
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Frequently Asked Questions
The entry plan is £0 a month. Paid plans start from £20 a month and include a custom domain. Card processing is 1.4% plus 25p on UK cards, or 2.5% plus 25p for other cards.
No. Mark a Square sale, online or in person, as sold in FLUF and it ends the eBay listing. eBay sales are the other way round: FLUF sees them and drops the Square stock.
eBay's listing policies restrict links that send buyers off eBay, so keep the website for your own customers and social media.
Yes. Both use the same Square item library, so a sale at the counter comes off the website and a website sale updates the till.
No. Both connect by signing in from FLUF.
Per sale, yes. eBay's final value fee is 11.9% in Clothes, Shoes and Accessories, while a Square Online sale costs only the card processing charge. Square brings no buyers of its own, so the saving applies to customers you already have.