That's cute.
You mean to tell me the guys at Panasonic are completely baffled as to how to make cards of much higher capacity and charge less for them. You don't give them much credit, do you?
For reasons and empirical evidence already stated in the thread, I think they're doing what they can do.
Barring expertise in the engineering and everything else involved in manufacturing P2 cards, I don't think you or anyone else can say what they "should" be charging.
They may not charge what you want them to. But that doesn't mean they're gouging; it only means that it's more than you want to pay. In that case, buy something else.
(A $15,000 Kia has four wheels and engine. So does a Ferrari. So why does the Ferrari cost $150 grand? Clearly, they can sell their cars for $20K, right?)