Originally Posted by Latitude65

Just a couple questions need answering before you can say the seller ripped you off:
-Was the seller the original owner? If not maybe the seller didn't know either. Not unusual for a seller to think they have one thing when in fact it is another.
-Could you have seen the identification data had you actually inspected the bike? After all the LBS did. If you could have discovered the facts by a reasonable inspection you are in a poor position to take legal action.

I don't know if you were ripped off or not. But, so far nothing has been posted to substantiate that.