What do you mean by money?
It can all be done free. Install the bukit.jar, make run.bat and type in the codes (Barely 2 Lines, Just do copy paste) and you have a free version.
Bukkit-I seriously have no idea why its named that
Bukkit is like a mod loader.
Its like client modloaders like Minecraft Forge, or Modloader.
It does nothing to your server until you install plugins.
First you must install the Bukkit Server "jar"
This add on to your server is vital
Almost every server has it.
Vanilla is sometimes boring.
Search installation guide on youtube
Its very easy
Tell me your server IP, I want to check it out. I have Hamachi so if you use that,
Centuries of trying to port forward.