I think your math is a bit off on this. For instance, if two people enter, it says whoever gets picked has a 100% to win,
Likewise, if three people enter, it says whoever gets picked has a 50% chance to win. Not a bid deal just figured I would let you know. It looks like it calculates the % based on the remaining number of tickets or users after the draw, while it should take the pre-ticket/user amount.