You make your choice about which donation package to go for, a stand alone like the number change? or a package like Brozne, Gold..etc
it's all a matter of your needs as a player.
Also remember one thing, this is called "donation" it's not a premium subscription or a sort of a paid account.
People who donate mainly do so to support a server they enjoy playing, and we appreciate their contributions by offering some perks in return, however none of the donator features is essential, and you can still have a great experience here without donating.
However, donating is encouraged to help us cover the operational fees of the server.
I hope this covers your inquiries!