TurboGrafx-16 / TurboGrafx-CD ~ I don't know anyone that had this system. I mean, I knew kids that wanted it, but that price tag was not sitting well with parents. Plus, NEC had no brand recognition like the other guys, so it was like, who even are you people to ask that much?!
Sega Genesis ~ these listings were back before the Sonic era, when the biggest draw to the system was the Sega arcade ports. Also hard to imagine today paying nearly $60, $70 for these games, but at the time, there was really nothing like it on a home console.
The NES ~ by this point, the SNES was roughly a year away. But surprisingly, the NES would keep chugging along until 1994!
Sega Master System ~ I honestly think this is an underacted console. I was lucky enough to have this and an NES as a kid, and I loved them both. It wasn't as popular as the NES here in the US, but in Brazil the Master System lived on for years!