Even with the flood of new graded games, few sealed popular titles like Mega Man have been available for sale, and the insider population numbers are said to be very low. I don't think there are huge lots of sealed Mega man's laying around in somebody's lost warehouse, especially with the prices were seeing. Coupled with the growing demand, this seems like it's only starting, but it only seems specific to popular titles that many people opened and played on NES, Genesis, SNES, Gameboy, and N64. However, even high grade CIBs are blowing up. Actually, not even high grade. I saw a cib retail sonic the hedgehog graded 5.5 sell for over $300 on ebay last week.