Your card shop, finally sorted.
CardGremlin watches your eBay inventory, tells you what needs attention, and helps you list, restock and organize without the spreadsheet chaos.
Built for people who sell cards, not spreadsheets.
Four things that quietly save you hours every week.
Know what to do next.
Restock, reprice or leave it alone. Every suggestion shows its evidence, and when there isn't enough, it says so instead of guessing.
Combine copies, never mix them up.
Build one clean listing from matching copies. Set, number, finish, language and condition must agree. Quantities stay exact and every source listing is tracked.
Find any card in seconds.
Keep every card in a labelled bin and see exactly what belongs inside, whether you're packing orders or restocking.
Price with real context.
See what matching cards are asking right now, filtered to the same finish, language and condition. Always labeled as asking prices, never passed off as sold prices.
Nothing goes live until you say so.
Your listings are your business. CardGremlin checks, shows you, and waits.
Check
We validate the exact listing with eBay first. A check never creates anything.
You approve
You approve the exact listing, price and quantity. Change anything and it needs approval again.
Verify
After it posts, we read it back from eBay and confirm every detail before calling it done.
Your original listings are never ended or replaced unless you separately approve that step.
Give your inventory a gremlin of its own.
CardGremlin is in early access for a small group of eBay card sellers. Already invited? Log in and pick up where you left off.