For UK eBay sellers · Windows
Sellhelm watches your suppliers' product pages, works out what every item should sell for after every eBay fee, and keeps your listings, orders and books in step. It runs on your own PC, with no subscription.
Turn the wheel
Supplier now charges
£68.50
Same as when you listed it
25.6% return on what you spend (target 25%)
An illustration, not your data. The fee rates are an example: Sellhelm works from eBay's published rates for each product's category. The 25% target return and 25% jump limit are settings too.
The quiet leak
Nobody loses money on the sale they meant to make. They lose it on the one made at yesterday's price, on stock that has gone, and on fees that were counted short.
You listed a bed frame at £99.99 to keep £17.51. The supplier raises it a little at a time. Your price stays where it was.
The supplier runs out. Your listing stays live. Someone buys the one thing you cannot send, you cancel, and eBay counts it against your seller record. At its next check Sellhelm sets the quantity to 0, and it looks at eBay's out-of-stock setting first, so it never ends a listing by accident.
eBay takes a tiered final value fee, a per-order fee, a regulatory fee and VAT on all three. On a £99.99 sale that is £13.98, about 14% of the price. A flat “add 30%” markup guesses at it. Sellhelm solves for it.
Twelve shops in twelve tabs, a spreadsheet to update, and a nagging feeling you missed something. That is not a business. It is a chore that grows with every listing.
Ten sales at the wrong price cost more than Sellhelm Solo. Sellhelm is there for the eleventh.
How it works
Seven steps that repeat for every product. These are the real screens, with demo data.
Paste a supplier's product link. Sellhelm reads the price, stock, photos, specification and selling points and turns them into a draft. Nothing is on eBay yet.
Choose the return you want on what you spend. Sellhelm solves for the eBay price after the final value fee, per-order fee, regulatory fee, VAT on those fees and delivery, and shows what you keep.
Compare each draft with the supplier's own page, tick it, then send it to eBay in one of five designs. Supplier names are kept off your listings.
On a schedule you choose, Sellhelm re-reads your suppliers. A rise or a sell-out updates eBay; a jump bigger than your limit is held for you to check first.
When something sells you see it with the photo, the supplier link, the days left to dispatch and what it should keep. Nothing sits unseen.
Open an order for the delivery address in copy-ready parts, read live from eBay and never saved. Add the supplier's tracking number and it goes straight onto the eBay order.
Every sale, fee and cost lands in Finances: what you really kept, VAT return figures, tax to put aside and a CSV your accountant can open.
Suppliers
16 answer plainly, 8 need a gentle pace, and 8 are read through your own Chrome. You just paste the link.
A day with Sellhelm
One product, one ordinary day. Everything marked Sellhelm happens without you; you do the parts marked You, in a few clicks.
A bed frame goes from £68.50 to £96.40 overnight. You are asleep.
It re-reads the page on your schedule. The new price would be £139.99, a 40% jump, which is over your 25% limit. So it does not send it. It holds it and tells you.
It is under "Held for you", with the old and new figures side by side. You compare it with the supplier's page, and press Send it now, or set your own price.
The order desk shows the photo, the supplier link, days left to dispatch and what it should keep. The address is read from eBay and split into copyable parts.
A few clicks to copy the address across. You tick "placed with the supplier" and add their order number.
You paste the tracking number. It goes straight onto the eBay order, and the buyer is told.
The Overview shows what you kept from sales, what is waiting, and what to put aside for tax and VAT.
What is inside
Say what return you want on the money you spend. Sellhelm works backwards through eBay's tiered fee, the per-order fee, the regulatory fee and the VAT on those fees.
| Supplier price | £68.50 |
|---|---|
| eBay final value fee | £10.90 |
| Regulatory and per-order | £0.75 |
| VAT on eBay's fees | £2.33 |
| You sell at £99.99 and keep | £17.51 |
A supplier typo should not reprice your shop. Any change over your limit is held, with the old and new figures side by side.
An example of three changes at one check
The supplier's page, the address in copyable parts and tracking that goes onto eBay, all on one screen.
Sales, fees, goods and costs, VAT return boxes 1, 4, 5, 6 and 7, tax to put aside, and a CSV for your accountant. Figures are estimates and it says so.
Every design fills itself from the product, your delivery and returns policies and your shop name. Pick one for every product, or one per shop.
For those, the Chrome extension reads the page in your own browser and hands the result to Sellhelm. Every other shop is read directly.
A daily backup, one-click Export everything and Restore, an optional password lock for the panel, and a dark theme.
By hand, or with Sellhelm
Who it is for
You find a product on a supplier's website, list it on eBay, and buy it in when it sells. Sellhelm keeps the price, the stock and the paperwork right, so you can spend your time finding the next product.
A day job, a few dozen listings and a habit of checking prices on the bus. You want your evenings back and your prices right.
Fits Solo
Hundreds of listings, orders every day, and VAT registration on the horizon. The maths matters now, and so do the books.
Fits Solo or Pair
A partner or an assistant on another PC, or several shops of your own. Each PC has its own licence and its own eBay keys.
Fits Crew
Privacy by design
There is no Sellhelm account to sign in to, no licence server it checks in with and no analytics. Your keys, prices, orders and books stay in a folder on your computer.
Getting started
Run the Setup file and follow the steps. Sellhelm carries its own runtime, so there is nothing else to install.
A few minutes
The Activate screen shows your Machine ID. Paste it into your account and your licence key appears.
A couple of minutes
Your own free developer keys, about 15 minutes. Settings shows every click, including the account-deletion question.
About 15 minutes
Paste a supplier link, check the draft against the supplier's page, and list it.
A few minutes
Before you buy
Pricing
No subscription and no per-listing fees. One licence runs Sellhelm on one Windows PC, and every 4.x update is included.
Every pack includes everything. The only difference is how many PCs it covers.
Need more than five? Ask us and we will work something out.
Sellhelm is one payment. Slide to what you pay now and see when Solo has paid for itself.
Solo pays for itself in about 4 months.
Over three years you would spend £1,080 against £99: £981 kept.
Try it on your own shop. If Sellhelm is not right for you, say so within 14 days and we refund every penny, with no forms and no argument.
Questions
The things people ask before they buy. There are more than thirty more on the FAQ page.
Yes. Every seller uses their own free eBay developer keys - eBay issues them to one seller and does not allow sharing. It takes about 15 minutes and Sellhelm's Settings page walks you through each click, including the account-deletion question eBay asks.
No. Sellhelm runs on your PC and keeps its database in a folder on your PC. There is no Sellhelm account to log in to, no licence server it phones and no analytics inside the program. It talks to eBay and to your supplier shops, and to nobody else.
Not yet. Sellhelm is for Windows 10 and 11 and for eBay UK, and its fee and VAT maths are built for UK sellers.
One licence lets Sellhelm run on one Windows PC. You get a Machine ID from the program, paste it into your account, and your licence key appears. If you replace that PC, you can move the licence to the new one yourself.
Sellhelm does not promise profit or sales - nothing can. What it does is stop the avoidable losses: selling below cost after a supplier price rise, and selling things your supplier no longer has.
Tell us within 14 days and we refund you in full. No forms and no argument.
From £99, once. Fourteen days to change your mind.
