Hi, let me tell you about my server, its in beta, and our website is http://noobfax.enjin.com
The ranks are handled manually /mail me if you need to

Default-
/nickname is allowed
/mail is too

Donator- $5.00
/fly
/say
/back
/hat

A-mazing- 15.00
Donator stuff
/spawner
/tp
/broadcast

2cool4u- $30.00
/up (number)
/gamemode
Access to sumo
Perks from ranks below

And special- $50.00
/speed
Perks from all ranks below