dunno about bogus? but no receipts etc isn't great..
Although, everything has it's price.
What I'd do is ring the company that did the work (as they should have info on what they did) if that checks out ok that's good. Who buys it could then get a paper copy form them as proof. But then again if I was the seller I would of done this.
The owner does exist (as like I say I found his user name on here)