Couldn't be happier with the bike I bought there, either. It was near immaculate and serviced properly. When I brought it to my local Kawi dealer for a jet kit, I had them do a looksee. They said it was in excellent mechanical condition. And I paid about $1000 less than the most of the dealers were asking for it. (And I got a Muzzy titanium can, too.)
The key is to try to read the tea leaves, examine pictures closely and ask plenty of questions if you have any doubts about the honesty of the seller.
That being said you're still taking a chance when you can't see the bike in person. You are protected to a large degree by ebay now, but it's still a risk. A risk I'm glad I took.