My answer is based on similar length of experience, although I apparently pay more attention than you to spot pricing of memory modules. Based on variables in supply and demand, several times in the past decade memory prices have increased. (one would think that if you truly worked on computers for the last 15 years as you say that you would have noticed the occasional price increase)
Oh, and I pay attention to the storage available on iPhone models.
iPhone ≠ more storage every year. There was no storage increase from the iPhone 3GS to the iPhone 4.
Geckotek, do you think the next iPhone will have a 64 GB model?