Upgrading to Object Desktop Ultimate?

I currently own;

ObjectDock, IconPackager, and TweakVista (In fact I purchased ObjectDock and IconPackager just two days ago).  Is there any sort of discount if I wanted to upgrade to the full Object Desktop Ultimate package?  Or if there isn't, what's the return policy for Stardock?  If I wanted to try and get a credit for the two programs I just purchased and turn around to get the full ODU package?  (Never had to try and return something with Stardock, all the games have been near perfect).  Thanks.