eBay Motors, best practices?

So I'm considering bidding on a car sight unseen on eBay. Not going to post it here quite yet, but I was wondering if anyone on here has bought one off eBay? I've never done this before so I don't know what I'm getting myself into. I've already looked up details for getting the car inspected, but being Memorial Day weekend, the inspection agency is closed, so I'll have to get it rushed on Tuesday. I've got shipping quotes (also considering taking a few days off to fly and drive it back). Set my max bid limit. What else do I need to do to have a successful experience?