Panasonic charges $900 for a 16GB card which is made up of four 4GB SD cards. I can buy 4GB SanDisk Ultra 2 cards at Costco for about $60-$70 each. That's under $300 for 16GB. I'd love to see what Panasonic's marginal costs are for their 16GB P2 cards. My guess would be around $100.
Great argument that ignores one very small, but determinative, item.
If this were the margin, then some company could step in and sell a bunch of 16GB cards for $200.00 and make a killing because you can't find any.
So, logic indicates that your argument is pretty specious.