Early access · eBay and Mercari
Point your camera at a barcode and the listing comes back filled in — title, category, condition, specifics, a price — with every value saying where it came from, ready for you to check and send to eBay and Mercari at once.
One catalogue, two marketplaces, one set of stock counts.
Seven rows decided. One needs you.
The flow
A barcode, a sheet to check, and one publish that reaches both channels.
01
Point the camera at the barcode. No barcode, or nothing in eBay's catalog for it: search eBay by title and pick the right row out of what comes back, or type the product in yourself. All three doors end at the same sheet.
02
The sheet arrives filled in: title, category, condition, the specifics that category asks for, and a price. Every row says where its value came from — from eBay's catalog, from your recipe, what you usually pick. Anything nothing could answer says needs you, in amber, and opens itself.
03
eBay and Mercari at once. A preflight runs first and names exactly what is missing — a weight, a Mercari category, a condition eBay will not accept — so the listing stops on your screen instead of being refused by a marketplace.
What it does
Decided defaults
A scan reads eBay's catalog entry for the barcode and decides what it can. The brand comes from the catalog's own aspects rather than out of the title. The category is one eBay actually has listings under. The condition is the one you usually pick. Nothing is a guess dressed as a fact: an assumed value says that it was assumed, and an empty one says needs you.
One stock
Quantities live here, not on the marketplaces. A sale on eBay is imported once, deducted once, and the new quantity goes out to Mercari in the same sync — so the second listing drops or comes off before someone buys what you no longer have. Counts clamp at zero, and every order is keyed on its channel and its order number, so a repeated pull cannot take the same sale twice.
Orders and shipping
Orders from both channels land in one place, and To ship is what is left. Buy postage through Shippo or EasyPost and the label prints here. A Mercari sale the marketplace already paid postage on uses Mercari’s own prepaid label. Pirate Ship has no API, so it gets the round trip it needs: export, buy, import the tracking back. Packing slips and pick lists print from the same page.
Pricing
Suggestions come from what the thing is listed at on eBay right now, at the condition you picked, with obvious junk left out and a count of what was excluded. If it does not sell, the price ladder walks it down on a schedule you set, to a floor you set and no further. Liquidate is that move made at once across a selection, and it says up front which of them have a cost to floor against.
The rest of it
A dashboard that leads with what needs you, the catalogue, the orders, the listing setup, and the channels themselves.
Who it is for
CellerHub is for people selling one-of-a-kind and small-quantity stock: media, collectibles, pins, vinyl, cards, games. One of most things, two or three of a few, and a shelf that turns over every week.
If you keep the same items listed on eBay and Mercari, and you have been holding the counts together by hand and pulling the second listing after every sale, that is the job this takes over.
Questions
Early access
Tell us what you sell. Accounts open in small batches and each one is opened by hand, so the more you say here the sooner yours makes sense to open.
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Request received
These are read by a person, and the reply comes back to the address you gave. Access opens in small batches, so it may be a few days.
Anything urgent in the meantime: support@cellerhub.com.