Crazy E-Bay auction

This auction crazy:
http://cgi.ebay.com/TRANSFORMER-MYSTERY-AUCTION-ENVELOPE-LQQK_W0QQitemZ190107148821QQihZ009QQcategoryZ4696QQrdZ1QQcmdZViewItem
So I would have a 1 in 2500 chance of winning a Megatron. What's not to say the guy won't put the "winning ticket" in the last envelope?
I find it a bit odd personally.
http://cgi.ebay.com/TRANSFORMER-MYSTERY-AUCTION-ENVELOPE-LQQK_W0QQitemZ190107148821QQihZ009QQcategoryZ4696QQrdZ1QQcmdZViewItem
So I would have a 1 in 2500 chance of winning a Megatron. What's not to say the guy won't put the "winning ticket" in the last envelope?
I find it a bit odd personally.