Oh, here is another lame price list that these ebay gougers are using:
http://www.racketboy.com/retro/turbografx-16/the-rarest-most-valuable-pc-engine-turbografx-16-games
interesting, I mean yeah if you pick the most wanted games out there and make a list of course the prices are going to be high. Also by having a hugh variation in low to high cost, you can make it seem like a game is worth $2000. but yeah you can do basic research on e-bay and figure out these numbers anyway, doubt it'll change anything as far as gouging.