Built for the seller who reads the fine print.
Every module below is shipped and running — not a roadmap. This is what ArbiKey actually does, screen by screen.
Profit, not revenue
Revenue is a vanity number. The dashboard leads with net profit, average ROI and margin, then breaks the month down by category so you can see which niche is carrying you and which one is a hobby.
- Net profit, ROI, margin and order count
- Category donut and month-over-month trend
- Monthly profit goal with a progress bar you'll actually check
Answer the question before you buy
Source cost in, target margin in, list price out. Every eBay fee, your shipping, VAT and today's ECB exchange rate are applied automatically — so the number it gives you is the number that survives contact with reality.
- Break-even price and target-margin price, side by side
- Live currency conversion — cross-border maths handled
- Saves your calculation history so you can revisit a decision
The month that adds itself up
Log a sale in a few seconds. Supply cost, fees and shipping come along for the ride, so the profit figure is final, not provisional. Returns knock it back down — because pretending they don't is how people convince themselves they're winning.
- Searchable order history, fast at thousands of rows
- Returns and refunds tracked against the original sale
- PDF invoices and CSV export, ready for your accountant
Import, list, sync — without touching a spreadsheet
A Chrome extension pulls the product straight off Amazon or AliExpress. One click lists it to eBay through eBay's own Listing API — title, price, category and images filled in for you. Connect your eBay account and orders, fulfillment status and tracking numbers keep themselves up to date.
- One-click import from Amazon & AliExpress, one-click listing to eBay
- Automatic eBay order & fulfillment sync via secure OAuth connection
- Live supply price & stock monitoring, so a source change never surprises you
Your whole catalogue, with the real number on every row
Already selling on eBay? Your active listings come in through eBay’s official API — title, price, quantity, SKU, image and link — without retyping anything, and without changing a thing on eBay. Add what each item cost you and every row carries its true margin. A listing that is already running can be edited from here too.
- Import your existing eBay listings — read-only, 200 at a time
- Bulk cost entry, because eBay never tells us what you paid
- Edit a live listing: title, price, quantity, SKU and business policies
- Supply price and stock watched in the background, per product
- A product with no recorded cost shows a dash, never an invented margin
Orders arrive while your computer is off
A job on our servers pulls new eBay orders every thirty minutes: buyer, shipping address, quantity, fulfilment status and the item image. Each one is priced against the real category fee for that item, the shipping you collected, VAT and the exchange rate for the day it landed — so the profit column is final, not provisional.
- Scheduled server-side sync — not a browser extension that stops when you close it
- Per-order net profit, not gross revenue
- Orders with no matching product can create those products in one action
- Returns tracked against the original sale, so the month tells the truth
What still needs ordering, and what needs a tracking number
One queue for the two things that cost you money when they slip: an order you have not placed with your supplier yet, and a parcel that went out without a tracking number on eBay. The supplier order sheet puts the whole delivery address on one screen, field by field or all at once, so ordering by hand stops being a copy-and-paste exercise.
- Supplier order sheet: order number, item, variant, full address, supplier link
- Tracking numbers and carriers push back to eBay automatically
- Delivery status comes back in, and delivered orders close out with a final figure
- ArbiKey never takes your card, holds a balance or moves money — you pay the supplier
Which niche is carrying you, and which one is a hobby
Net profit and margin over time, broken down by category, by store and by product. Every figure uses the same engine as the calculator and the automation, so the number in a report is the number that decided an automated action — there is no second, friendlier set of books.
- Monthly net profit and margin trend, after every fee
- Category and per-product breakdown, with the losers visible
- Per-store reporting — a UK store and a US store never share one fee table
- CSV export and PDF invoices, ready for your accountant
Boring where it counts.
You are trusting this thing with your business numbers. Here is what that's built on.
Row-level security
Your data is isolated at the database level, not just in the interface. Another account cannot read your rows even if something upstream goes wrong.
Tamper-proof audit log
Every insert, update and delete is written to an append-only log with the fields that changed. Nobody — including us — can quietly rewrite your history.
Encrypted backups
On every plan, your catalogue and sales can be backed up encrypted, and restored if you ever need to roll something back.
The parts that only matter once you are running.
None of these sell a demo. All of them are the difference between a tool you keep and one you cancel.
Account Health
One page for the things that quietly cost money: listings whose supply cost has passed their selling price, orders running late, parcels shipped without tracking, orders with no cost attached, supply data too old for the automation to trust, and an eBay connection whose token has stopped refreshing. Every finding carries the action that fixes it.
Settings per store, not per account
Seller region, listing and payout currency, the category fee table, tax and ad rates and your margin thresholds are held separately for each store. This is what makes the profit figure right when you sell in more than one marketplace — a UK store charging UK fees and a US store charging US fees, out of one account.
Your own supplier book
Suppliers you already buy from, kept alongside the products you source from them, with the supplier detected from a product’s source link and attached in one click. Ordering stays yours: we do not place orders on Amazon, because eBay’s policy prohibits fulfilling from another retailer.
See it against your own numbers.
Import a CSV, or add ten products by hand. You'll know within an hour whether this is for you — and the first 30 days cost $1.
Start 30 days for $1Still comparing eBay seller software? The four questions worth asking any vendor — including us.