My local card shop just got some stock in, and part of it is some WOTC era cards that a player donated. Cards from base set, Jungle etc. They are in good condition, near mint. All of them holos. My card shop sells individual holos at AUD $5 (about $3.50 USD). Are they worth anymore than this or could I buy them and resell on eBay for a profit? They also had an unopened Ancient Mew.
Some of the cards were Mewtwo, Venusaur, Blastoise. Lots more, as I didn't take much notice. Now I'm kicking myself, wondering if I should go back and grab them before somebody else does. There were lots of other old cards including DP era ex cards but I don't know if any of them are valuable.