Personally, I don't even like speedhumps on a Boxster, so I wouldn't buy a ticket.
I question if it's 'right' to work the board for profit. Plus, how you gonna pick the winner in a neutral, unbiased way - Independent accounting firm? If not, there are sure to be some questioning it's validity.
Take your chances and put em on fleabay - there's lots of suckers there, instead of trying to pass the risk to us.