Check out these great sites to purchase trading cards and/or CCG cards!
(Click on the EBAY icon to see their current eBay auctions.)

Mik'z Cards (sells thru eBay also)

Warp 9 Cards (sells thru eBay also)

Peer-To-Peer Non-Sport Card Listing/Resource Sites

mahasamatman's Trading Post

Pwyller's Non-sports Trading Card Resources A site dedicated to everything the non-sports collector needs