How is the prize pool determined? And do I pay any fees to participate?

The prize fund is replenished by several factors. 100% of the value of the tickets purchased in this round fund the pool. Also, if any prize pools had no winners, the prize amount is redistributed to the next round. Also, 10% of the total prize pool each round is dedicated to the next draw.

There is no additional commission in the game. All you need to do is buy a lottery ticket (cost - $5 in PLT) for a chance to win big prizes.