nabla: the way it's set up now, you'd have to send that big french cheese to Fencer in advance so he could set the "prize has been provided" flag. And then he'd send it to the winner when the tournament was over.

Since the subject has been brought up I'd like to make a sugestion:
When buying a membership, besides the target player option have a tournament option, where you could buy a membership as a prize to a tournament (when selecting, only the open prized tournaments would show up on that list). The new membership would be added to the shopping cart and the association with the tournament made automatically (no intervention from Fencer). This would also allow for a separate field to be displayed on the tournament details page, with the prize that had been paid (weather or not it matched what was said on the tournament's description).
On the tournament page itself, while the prize hasn't been paid, a link to pay the prize could be visible. This could allow to buy a money prize, or a membership prize, or brains prize or whatever (the big french cheese option may be a bit hard to implement in this system, but the current system would still be available for any option, naturally).