Source smarter. List faster. Track every pound.
The all-in-one system for UK resellers. Know what every item cost, write accurate eBay and Vinted listings from your photos, and see what every sale really made. Works like an app on your phone at the car boot and on your laptop at home, in light or dark.
- £19.99/month for the first 30 members
- Price locked while you stay
- 30-day money-back
- Cancel any time
- Free to join the list, no card
Opening soon: checkout isn't open and nobody is charged yet. Software you subscribe to, not a sales service. No guaranteed sales or income.
Profit this month
£251.40
3 sales missing costs not counted
Sales this month
£486.00
27 items sold
Stock you're holding
£318.75
At cost · 63 items
To do
- 22 items not listed yet
- 9 items over 60 days old
- 3 sales missing costs
Illustration of the layout only. Not a real account or real results.
See it working
The real screens, shown with example stock. Click through the views.
Real Profit OS screens, filled with example data. Not a real account or real results.
What to do today
Start a listing straight from your photos, see this month's profit, sales and stock, and a to-do list that takes you to each fix. A sale with a missing cost is flagged, not guessed.
You're working harder than your numbers show. Here's where the money goes.
Bulk lots you never costed
Delivery and the duds get forgotten, so every item looks more profitable than it is.
Fees and postage you guess
A sale that looks like £20 can leave far less once the real costs land.
Stock that sits for months
Cash tied up in bags of stock you'd forgotten you had.
Hours typing listings
Titles, descriptions and measurements, one item at a time, every week.
More listings don't fix that. Knowing your numbers does. Profit OS puts everything in one place, so you can decide what to buy, list and drop from real figures, not gut feel.
Nine tools that would cost you hours, in one membership
Everything works together. A listing becomes a stock item, a stock item becomes a sale, and every sale shows what it really made.
- 1 Record stockAn item or a whole lot, with its exact cost.
- 2 List itAI from your photos, or a template from your details.
- 3 Record the saleYour real fees and postage show what it really made.
- 4 Review weeklyYour top three jobs, from your own data.
RSUK Profit OS
Everything below, in one membership
AI Listing Studio
100 eBay + Vinted listings a month, written from your photos and the details you confirm.
Replaces: Typing every title and description by hand
Inventory
Every item, what it cost, where it's stored and how long it's been sitting.
Replaces: Notes app, bin bags of 'stuff to list' and memory
Bulk buy cost split
Every piece of a lot gets its exact share of the cost, delivery included, to the penny.
Replaces: Guessing what a bundle item really cost you
Profit on every sale
Record the actual fees, postage, packaging and refunds. Unknown costs are flagged, never hidden.
Replaces: The spreadsheet you stopped updating
Profit dashboard
This month's profit, sales and stock, what needs doing today, and profit week by week.
Replaces: Working it out at tax-return time
Stock review
Stale stock flagged at 30, 60 and 90 days, with a next step for each item.
Replaces: Stock you forgot you had
Buying calculator
The most you should pay for a lot to hit your profit, and what happens if it sells slower.
Replaces: Overpaying at the car boot
Weekly report
What you added, listed and sold, what it made, and your top three jobs for next week.
Replaces: Not knowing what to do next
Tax year, sorted
Your £1,000 trading allowance, HMRC's 30-sale platform reporting on each site, mileage at HMRC rates, and one export for your accountant.
Replaces: A shoebox of receipts every January
Members' library
Short, practical lessons on sourcing, pricing, listing and records, each ending in an action.
Replaces: Hours of scattered YouTube and forum advice
Founders price, first 30 members
£19.99/monththen £29.99 for everyone else
Locked for as long as you stay
Listing more than 100 a month? Founders get 300 for £29.99.
Is it worth it for you?
Put in your own numbers. If Profit OS doesn't earn its place in your week, the guarantee means you don't pay for it.
What does typing listings cost you?
Your own figures. Nothing is saved.
Title, description, measurements
Fill in all three to see what listing costs you each month.
30-day money-back guarantee
Try everything with your own stock. If it isn't for you, ask within 30 days of your first payment and you get it all back. No questions, no forms. Cancel any time after that and you won't be charged again.
Why only 30 founder places?
- The first 30 paying members keep £19.99 a month for as long as they stay. After that it's £29.99.
- Founders get a say in what we build next.
- The count comes from real payments on our server. No fake countdowns.
Exactly what's ready, and what isn't
No vapourware. "Built · in testing" means it works and is being tested before launch.
Inventory
Every item with its cost, size, condition, flaws, storage spot, platform and status. Search, filter and export.
Built · in testing
Bulk buy cost split
100 items for £300 plus £20 delivery, 10 unsellable? Each of the 90 gets its exact share, to the penny.
Built · in testing
Sales and profit tracking
Record the real price, fees, postage, packaging and refunds. Missing costs are flagged, never counted as £0.
Built · in testing
Profit dashboard
Opens on what needs doing: start a listing from your photos, this month's profit, sales and stock at cost, a to-do list and profit week by week.
Built · in testing
Buying calculator
Cost a lot before you buy, see the most you could pay for your target, test weaker sales, and save it.
Built · in testing
Stock review
Unsold stock at 30, 60 and 90 days (or your own thresholds), with next steps based on each record.
Built · in testing
Weekly report
What you added, listed and sold, what it made, and up to three priorities, in the app.
Built · in testing
AI Listing Studio
100 AI listings a month: eBay and Vinted listings from your photos and confirmed details. Template drafts work now.
Built · AI not switched on yet
Tax year
Progress to the £1,000 trading allowance, sales on each platform against HMRC's reporting thresholds, business mileage at HMRC flat rates, and a tax-year export for your accountant. Organises your records; not tax advice.
Built · in testing
Members' library
Short lessons on sourcing, pricing, listing, inventory and record keeping, each ending in an action.
Built · in testing
CSV export
Take your inventory, sales, expenses, mileage and tax year with you whenever you like.
Built · in testing
Weekly report by email
Once there's a proper sender and you've chosen to receive it.
Planned
Posting to eBay, Vinted or Depop for you
You copy and post your own listings. No auto-posting, auto-delisting or marketplace sync.
Not included
Live market prices
We open sold searches for you, but don't show prices we haven't checked.
Not included
Pick your start
Monthly only. No contracts, no setup fee, no surprise charges.
Free trial
£0
- 10 AI listings in total
- Up to 25 inventory items
- Every tool to try
- No card needed
Your records stay if you don't upgrade.
Get notifiedFounders Membership
£19.99/month
- 100 AI listings a month
- First 30 paying members only
- Price locked for as long as you stay
- Unlimited inventory, bulk buys and sales
- Everything in Profit OS
Your price never goes up while you stay subscribed. 30-day money-back on your first payment.
Join the founder listFounder Pro
£29.99/month
- 300 AI listings a month
- First 30 paying members only
- Price locked for as long as you stay
- Unlimited inventory, bulk buys and sales
- Everything in Profit OS
For founders listing more than 100 a month. One founder place covers both founder plans, so you can switch between them.
Join the founder listStandard Membership
£29.99/month
- 100 AI listings a month
- Unlimited inventory, bulk buys and sales
- Everything in Profit OS
The price once the 30 founder places have gone. Same 30-day money-back.
Get notifiedPro Membership
£39.99/month
- 300 AI listings a month
- Unlimited inventory, bulk buys and sales
- Everything in Profit OS
- For sellers listing 10+ items a day
The 300-listing price once the founder places have gone. Move up or down any time.
Get notifiedRun out mid-month? Top up
Extra AI listings for members, paid once. Used after your monthly listings, they never expire, and a failed listing gives its top-up back.
+25
£4.99 (20p each)
+50
£8.99 (18p each)
+100
£14.99 (15p each)
30-day money-back guarantee
Try everything with your own stock. If it isn't for you, ask within 30 days of your first payment and you get it all back. No questions, no forms. Cancel any time after that and you won't be charged again.
Subscription terms in brief
- A monthly subscription that renews each month until you cancel.
- Cancel from your account at any time. You keep access to the end of the month you've paid for.
- 30-day money-back guarantee: if Profit OS isn't for you, ask within 30 days of your first payment and we'll refund it in full. No questions, no forms.
- Founders keep £19.99 a month (100 AI listings) or £29.99 (300) for as long as they stay subscribed.
- AI listings reset each billing month and don't roll over.
- See the draft terms and cancellation and refunds. Full terms, including how VAT is shown, are confirmed before checkout opens.
Free tools, one-off downloads or Profit OS?
Free tools
£0
Profit and bulk-lot calculators and a listing checker. Nothing saved, no account.
Use the free toolsOne-off downloads
From £7, paid once
Guides and spreadsheets you download and keep. Separate from membership: you never need a subscription for them.
See the shopProfit OS
£19.99/month for founders
Software that keeps your stock, sales and listings, works out the profit on every sale and tells you what to do next.
You're hereQuestions
Claim your shot at one of 30 founder places
Founder places go to the first 30 people who pay when we open, in order. The list hears first. £19.99/month locked for as long as you stay, 30-day money-back.
Reseller Systems UK is independent and not affiliated with, endorsed by or partnered with eBay, Vinted or Depop.