whoever bought those carts for $80 has got to be retarded
if you bring em to the store you'll get like $20, if that
if you sell em on the bay you'll get atleast $50, but if you list it as buy-it-now for like $60 i'm sure someone will take em, won't take long
but i'm sure you'll want a cool 80 bucks, so list 'em cheap for like a week & let the bidding begin