@VintageVulpix asks
I found a card in my bag and can't remember which table I bought it from. Bad sign?
Jeff answers
I'd start making a quick note after purchases: item, seller, amount, and anything discussed about condition. You don't need a complicated system. At a busy show, details blur together fast, and a thirty-second note can save a lot of guessing afterward.
— Jeff, infinitepulls.com