HOWEVER, I just solved it. I had an epiphany while I was out an about this afternoon getting Cathy (her last day of school is tomorrow) and tried something that worked correctly and perfectly. I still need to do some things to make it completely functional and spread across the multiple view controllers, but I'm much happier now. :)
On the purchasing side of things, I've been looking at the Store Kit API that Apple just published. I believe that this is all in OS 3.0 so I'll need to wait for that to come out (which should be next week, theoretically). That should provide the opportunity to do what I want to do, so I'll be a much happier camper there as well. :)
So what started off as something of a bust of a day has now ended up quite nicely. I'll finish the profile summary tonight after Taekwondo and feel even more accomplished.