Had a heck of a find today. I don't know if any of it works yet, but still:
Turbographix 16 system
Turbo express portable system
Keith Courage in Alpha Zones
All for $10. Pretty cool, since the last time I've seen a Turbographix 16 was when I was about...eight years old? Looks like I'll have to do some research on the CD attachment and whether these things can be made to play imports.
Did the CD attachment come with a system card? you probably know this, but you'll need one in order to play CD based games....the system card goes in the turbo grafx, and there are 3 different ones for the US system: version 2.0, 3.0, and the arcade card. The CD attachment will play PC engine CD's with no modification. You just need to be careful of which system card the CD requires. If the case says Super CD, then you need the 3.0, and obviously if the case says Arcade, you need the arcade card. There weren't that many games released in the US that required the arcade card, thus it's kinda rare and fetches $$ on the secondary market.) If you want to play PC engine Hucards , you'll need one of these converters:
plug the PC engine Hucard in the end, then plug the whole thing into the turbo, and you're good to go. You can also use one of these converters to use a Japanese system card (for example a japanese Arcade card tends to be cheaper then a US one, and there are more Arcade CDs released for the PC engine, so you could use the Japanese arcade card with a converter to play the PC engine arcade CD games)
I'm a big fan of the Turbo/PC engine; one of the jewels of my collection is my PC Engine Duo-RX that's been modded to play US hu cards...this thing will play any game out there
So if you have any questions, I might be able to help you out.