Currently you can purchase:
- Advanced Characters
- Character Transfers
- Name Changes
- Gender Changes
- Deco Items
- And a few more at http://www.uogamecodes.com
I think it would be cool to have for a certain price, a character "dupe" system where you can have one of your chars "duped" or made an exact copy excluding items. Just skills and such.
Or an extra few pet slots so you can hold out a few more pets at once.