Aside from the possibility of finding games at flea markets and thrift/pawn shops, where else can you really go to find them at a resonable price?
*Seriously do a yellow pages search and call all the non-Gamestop game shops in your area or check their web sites. Repeat every couple years. I've been surprised. Prices usually aren't particularly cheap, nor are the games terribly rare, but it's fun to walk into a real store.
*The are still online vendors with reasonable prices. More for the PC Engine, but common, uncommon, and slightly-rare TG games can still be found outside of ebay. Creative use of - ~ and quotation marks will get you there.
*Like BlueBMW said, this is your best source. There are also a couple other retro-friendly forums with some degree of traffic in TG games.
*Ebay sucks, but, approximately once a year, the stars align and any given rare game (other than MC + DH) goes for a reasonable price. Sometimes an auction somehow goes unnoticed by the a$$holes, sometimes it's a short-lived BIN, sometimes a stupidly-listed item (not every seller uses the words "turbo grafx"
).
*Also on ebay, nothing brings down the price of a game like a dirty, old TurboGrafx console - consider buying such lots if they contain the game you seek.
*Craiglist. Gamegavel.
Except for the copy of Insanity I just purchased from Arkhan, I haven't bought a turbo game since Meteor Blast DX because of prices.
It may seem like we've got it rough, but, unless you're looking for shrinkwrap or CIB, there are only about a dozen U.S. games that sell for more than the original retail price. Paying forty bucks for a used, eighteen-year-old game without the box like Neutopia 2 sucks, but we probably all make more money than when Toys R' Us stocked it for the same amount. I know that this is obvious and of small consolation: the prices are inflated and the games should be cheaper. Still, it's a good reality check to keep in mind.