Somebody here will probably do a basic check out for nothing-I'd suggest you speak with them and ask them to take a look at whatever you have concerns about, and help to find whether its worth it for you to go to buy it or not.
Many people buy on ebay sight unseen so with all the right info and lots of pics you should be able to get to a comfort level that you're good to go before taking the ride.
I wouldn't commit before you go-or at least have an escape clause in whatever you sign.