It's not you that's causing it anyway, Chris. I've been looking around and it's starting to happen with other systems and games too, even on craigslist.
Lately it seems that the money munchers out there, have gotten it in their heads that 20 year old games have moved out of the collectable market and into the antiques market.
Guess nobody told them that nothing is an antique until after 30 years.
BTW, I caught your Cadash review a few days ago. Nice job as always.