But, think about it, you were banned for hacking, you know what happens when you hack, you know that before you get back on you should remove the hacks. Out of the 25 people I reckon about 5 will be dumb enough to hack again, then get banned again and then they can't come back. But, if the price were to be £15 the 25 people would have made the server £375 and say we lose 1 player per hacker that is on the server, considering that most people don't donate, we would probably lose about one donator which is £10-£150 pounds if they saw 5 hackers and left, less than half of the price of the 25 hackers that payed to get back, and we gain more players that payed to get back on the server and don't hack.
Not completely sure about my logic there but still..