Wow. That sounds like a pretty good idea. If you lose, part of the amount you bet is burned. Since there is a margin for the house, value should rise overtime.

The only worrisome thing for now is, that i can't find info on the way they actually obtain the odds.
Will have to do more research on that. I have dabbled a bit in sportsbetting and lost interest, when i realized winning players will get banned by the sportsbook. Doesn't seem like an issue here.