I almost won a bid on park hoppers because it was a good deal. I did not let my bid top the current price, though.
Now, before you all think I was off my rocker to even attempt such a stupid trick, here are the details.
They were 1992 (5-day) hoppers, with great pics of the unstamped windows AND they were clearly not punched either. In those days, the tix had 5 spaces for the use date to be stamped and also a place for a hole punch. The hole punch prevented the owner from trying to remove the date stamp and get more (i.e. illegal) dates of entry. The pics were very clear and they had 2 days left on the tix. Also, the pic showed that they had never been signed; they were blank.
Having been on the DIS for years, I knew that they were still valid. I was hoping that most Ebayers would think that the old tix weren't as good as new ones and pass them over. Up until the last hour of bidding, I had them at about $43/day. With my DVC discount, I knew could get 2-day UPH's for less than $60/day, so I did not exceed $50/day in my bid ceiling. I thought I would have a great deal but somebody else saw the same thing.
I would never, ever think of bidding on the scanned tix. Too risky and I wouldn't want my family to be visited by Mickey's police for using stolen tickets.