I got my TG-16 (with box) for $20 from a place called Floppy Joe's that operated in Plano Texas. I was also fortunate enough to get a boxed Turbo Booster for $19 as well. Floppy Joe's was a pretty cool store. They let you rent Amiga games (ahem, restocking fee) for something like $5 for 3 days. They also rented games for just about every console that was available at the time.

I never got around to buying a lot of titles for my TG-16 though. The small handful of titles I have for the console are Keith Courage in Alpha Zones, Alien Crush, Galaga 90', Military Madness, The Legendary Axe, Klax, Sidearms and Dungeon Explorer. They're all great games though.