Chic, IL Anyone want to help me out who lives near Schaumburg?

I'm one of the Minnesotans who came to see AotC at the digital theater in Schaumburg, and I bought a Gameworks card. I think I paid around $20-$25 for a card with $25-$30 value on it, and I think I only used about half of it. A Gameworks just opened in Minneapolis, but my card doesn't work there. When I swipe it it says "bad card". One of the employees said they use a new system or something. Anyway, I was hoping I could sell it to one of you guys who goes there occasionally. I'm not even sure what the value is, but I think it's somewhere between $10 and $15. Whoever wants it, I could mail it to you, you could check the value next time you go, and then pay me 80% of the actual value (that would be $1 per 50 credits instead of $1 buying 40 credits) rounded down to the nearest dollar, via paypal. You'd be on your honor about the amount. Anyone? Anyone?

EDIT: I got this taken care of. Thanks so much for all your help.