Built by a reseller whose spreadsheet finally broke. Every order, fee and payout in one desktop app, so you know what each flip actually made.
Opening in waves. The waitlist gets you in and into the Discord.
Dashboard
Good evening, Alex
Mark a row Awaiting return when a buyer wants to send it back.
Date & Time
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Ascended Heroes - Booster Bundle
Revenue & Profit
Sold-order trend view
Expenses Overview
This month's logged costs at a glance.
£417.78
£402.03
£183.38
£207.25/mo proj
£90.00
Anthropic - Claude Max
£35.01
Fuel
Recent Activity
Latest orders at a glance
O-019
Travis Scott AJ1 Low - Tropical Pink
Nike SNKRS · 01/06/2026
O-018
OP-13 Booster Box
eBay · 01/06/2026
O-017
Chaos Rising - Booster Bundle
eBay · 01/06/2026
O-016
Ascended Heroes - Booster Bundle
Amazon · 01/06/2026
Your whole operation at a glance, the moment you open it.
It opens on the Dashboard. Click through Orders, Sales, Inventory and Pre-orders to look around.
The full desktop app, shown to scale. Best on a big screen.
Why I built this
If you sell on more than one platform, you already know every one of these by heart.
Orders in a sheet. Receipts buried in email. Payouts in the banking app, listings on each platform. Reseller OS pulls orders, expenses and income into one place, so nothing quietly disappears.
The Vinted payout never matches what the listing said. Fees, postage, refunds, returns. Reseller OS does the maths per item and across everything, so you see what each flip cleared.
Built around how reselling works: several platforms, pre-orders, partial refunds, costs that repeat. Adding a sale takes seconds, so the records stay honest.
Mid-cop you've got a dozen Chrome windows, stealth sessions everywhere, maybe a bot running. The spreadsheet tab is long gone. Reseller OS is its own app, sat on the taskbar, one click.
How it works
No sheet, no fee maths at 1am. The whole loop, from a fresh order to knowing exactly what it made.
Log a purchase in seconds, or connect your inbox and Add orders from email builds it for you. No typing each one in.
Pending, received, listed, sold, returned. Every status on every platform, in one place, updated as it happens.
Fees, postage and refunds are already in the maths. You see net profit per item and across the whole business, not revenue dressed up as a good month.
Add orders from email
Connect your inbox and Reseller OS reads your order-confirmation emails and adds the orders itself. Delivery emails mark them received, marketplace sold alerts mark them sold, and anything it can't fully read gets flagged to finish in one click. You type nothing.
Local-first: your inbox password is encrypted on your machine and never sent anywhere. Only the email text is read, just enough to pull out the order. Join the waitlist
Checkouts · for bot users
Point your bot's webhooks at a relay link, or add the reader bot to your Discord. Whatever the bot sends, checkouts, declines, monitor pings, anything else, a copy gets kept and sorted into drops, profiles and hit rates in the cloud, 24/7. Nothing is missed while the app is closed. And for group runners there's a PAS tab: a ledger over your checkouts that tracks who owes on which hit, who has paid, and files paid batches straight into your income. Mid drop, Discord is chaos. This isn't.
Works with any bot that can post a Discord webhook, and your channels still get every webhook byte for byte. Read only by design: captured checkouts never touch your Orders or Inventory. Optional page, illustrative feed shown.
Works with every platform
eBay
Amazon
Vinted
Depop
Vestiaire
StockX
Facebook
WhatnoteBayAmazonVintedDepopVestiaireStockXFacebookWhatnotEight marketplaces, one ledger. Every order and sale together.
What's inside
Not a spreadsheet with extra steps. Proper tools, in one desktop app that belongs to you.
Chaos Rising ETB
O-071 · Pokémon Center
Travis Scott AJ1 Low
S-118 · eBay
Supreme PAMP Gold Bar
O-072 · Supreme
Every buy and sale on every platform with its true status: pending, listed, sold, returned, order issue. And where that jacket actually is.
One-off buys, recurring costs, tax-deductible flags, plus income that isn't a sale.
Offer received
£78 for your Jordan 1 Retro High
Item sold
Nike jacket sold for £148
New message
“Is this still available?”
Offers, sold notifications and buyer messages from every marketplace, collected in one quiet inbox.
Change prices, dates or statuses across your whole book in one pass.
Net profit · this year
+£4,820
Net profit, ROI and revenue after fees, postage and refunds. See the months that worked.
No account, no cloud. Your numbers live on your machine, with automatic backups.
The messy lifecycle a spreadsheet chokes on, handled cleanly end to end.
Bring a CSV in. Take everything out to Excel, CSV or JSON whenever you like.
Every parcel followed to your door, across couriers, without leaving the app.
Coming soon
Track every card, box and bar by how it came to you: bought, traded, or pulled straight from a pack. See your collection's live value at a glance, what you're holding, and the profit on everything you've sold.
Flag a card as an investment, keep it in your inventory, and it moves to sales the moment it sells. No re-entering.
Holdings value
£5,711
▲ +55% vs cost
Unrealised gain
+£2,036
across 5 cards
Realised profit
+£590
from sales
Holdings
5
1 slab · 3 sealed · 1 raw
Charizard exPSA 10199/165Bought£180£340
Romance Dawn Booster BoxSealedOP-01 · ENBought£90£1,250
PAMP Lady Fortuna Bar1 oz999.9 fine goldBought£2,950£3,150
LEGO ColosseumSealed10276Bought£450£875
Pikachu exRaw238/191Pack pull£5£96
LEGO UCS AT-ATSealed75313£975+£225
Mew exPSA 10232/091£210+£90Charizard exPSA 9199/165£240+£95
151 Ultra-Premium CollectionSealedSV3.5£185+£65
Awakening of the New EraSealedOP-05 · EN£200+£115Cost basis, eBay market value, grading log and more.
The waitlist gets it first. Join the waitlist
Built right
Local-first, desktop-native, and shaped in the open with the resellers who use it every day.
No account, no cloud. Your orders and finances live on your machine, never on our servers.
Fast and offline-friendly in its own window, with a full backup taken before every update.
Bring your old spreadsheet in as a CSV; export everything to Excel, CSV or JSON whenever you like, for your accountant or a backup you control.
Shaped in the Discord. Request features, report bugs, and get first go at whatever ships next.
Join the waitlist
Opening in waves. The waitlist gets you a spot in the Discord and first access. Free to get in.
Windows & Mac·Free to join
