The way my gyms have always done it is that we haven't paid for those comps until after we see if we're getting a bid. So it's on the schedule at the beginning of the season but it'll say "With Paid Bid Only". Then if we didn't receive the Paid Bid we had a meeting or a vote to decide if we still wanted to go. THEN we paid.
If you've already paid, I don't know what happens. Interesting question; I'll be interested to see the answer too.