CardSync is built by Shopmentor, a team that runs e-commerce for a living — including our own live trading-card store. We know the 11 p.m. listing sessions, the "is this still the right price?" doubt, and the spreadsheet that was supposed to be temporary two years ago.
CardSync started as an internal tool for MYNTED, our own TCG store. We built a pipeline that searched the card catalog, created perfect Shopify listings in one click, and re-priced the entire inventory every night from live market data. Listings that took 15 minutes took 15 seconds. Prices stopped going stale. Margin stopped leaking.
It worked so well that turning it into a product for every card merchant on Shopify was the obvious next step. That product is CardSync.
CardSync's market data comes from Collectr — the collection tracking platform used by millions of collectors. It's the same data collectors themselves trust to value their collections, refreshed daily.
We're a small team and we read everything.