I'm happy to sign cards or comics for any fan, collector or gamer. It'll cost you $5 US, for each signature. You can send as much as you want, but each item has to be accompanied by a $5 bill. If you have a bunch, a US Post Office money order would be a better solution.
You can mail them to me, along with a stamped, self-addressed envelope at:
P.O. Box 813
Skaneateles, NY 13152
It may take a few months to get them back. If you need something in a hurry, email me so that I can look for it.