I think since we had half the people drop, one case would be enough for me. Otherwise it jumped from $50 ($25 per month) to $121 ($60 each month). I know that it will be more than $50 each for 1 case but it would be at least closer to monthly fees.
Could even do $30 a spot with 30 spots (plus shipping/fees/etc). Each 16 members would get a spot and then those who want additional spots would have the chance to buy the extra 14 spots. If everybody wants a second, it would just take a randomization of the members and the bottom 2 only get the one spot. I don't know, I'm just brainstorming.