An example on my own forum would be splitting up the Premium Membership Packages and the Sponsor Link Packages.
The other suggestion is the option to have a page you see after completion.
This ideas comes from my Sponsor Link Package in the user upgrade earlier. I thought it would be good to have page after success of purchasing one of those that could give instructions on what to do next.
Example being. "blah blah blah, please send a message to karoshio with the following information for your sponsor link, blah blah, etc".