This would be so the mayor lottery's actually work, and you could input any amount of money into the lottery.
How would it benefit the server: Well, at the moment, The lotterys are pointless because your only option to input in is $0 , so if you win, you get nothing.
Frankly, I always find that weird. Was it forced to 0$ because the devs can't disable it? Or you wanted it, but no mayor knows how to change the value?