Posted By:
warshawlaw Naxcom runs the only major shows in SoCal. They've had a web site for card and other stuff for quite some time. I just completed my first purchase there. Interesting idea. Naxcom has you pay via credit card and they escrow the funds for 2 weeks. They notify the seller of the sale and tell him to ship the card, with delivery confirmation. If you don't get it or if it is non-conforming, you report it to them within 2 weeks and they will not release the funds to the seller until the issues are resolved. They also have a stock market style bid and ask set up where you can offer a certain amount for the item you want and see if a seller will fill it.
It doesn't have the breadth of ebay, but it is a good idea worth exploring.