GuiRedeemMCMMO allows players to redeem credits into mcMMO levels.
Can also be used to give donators credits when they donate, which they can redeem into levels, Admins wouldn't have to move a finger, it would be all automatic!

mcMMO is required for this plugin to function!

Features:
- Give or take credits from players
- UUID Support
- Players can redeem credits into any mcMMO skill (also supports the kind of new skill, Alchemy)
- A nice looking GUI when using /redeem (pictures below)
- Supports mcMMO skill caps, players cannot go over the skill cap.
- Almost all messages are customizable.
- Messages where it would make sense to have placeholders, have it! Like %Credits% in /credits.
Suggest me features?

Commands:
- /redeem - Command to redeem credits
- /credits [player] - Check your/somebody's credits
- /addcredits <player> <amount> (Alias: /givecredits) - Give credits to a player
- /takecredits <player> <amount> (Alias: /removecredits) - Take credits from a player
- /guiredeemmcmmo (Alias: /grm) - Command to show help and to reload config

Permissions:
- guiredeemmcmmo.addcredits - Access to /addcredits
- guiredeemmcmmo.takecredits - Access to /takecredits
- guiredeemmcmmo.credits.other - Access to view somebody else's credits (/credits <player>)
- guiredeemmcmmo.reload - Access to /grm reload

Config:
http://pastebin.com/A1gMDVt9
Should be pretty straight forward

Pictures:

Metrics:
This plugin utilizes Hidendra's plugin metrics. It just collects stats like player amount from the server, nothing harmfull.
Fore more information about this, visist https://bukkit.org/threads/mcstats-plugin-metrics-r7-easy-advanced-plugin-statistics.77352