The Fifty50 is a single table SnG tournament. If you use Prize Distribution = Fifty50 scheme, the tournament will be stopped when half of the players are eliminated. The remaining half of the tournament participants get paid according to a special formula. It implies that half of the prize pool will be paid to the winners in equal parts. In other words, everyone will get a buy-in excluding rake payout. The second half of the prize pool will be distributed among these winning players depending on the size of the chip stack left. Thus, a finisher with a bigger stack will get paid more than someone with a smaller stack.