People commonly think the PS3 was a flop due to very poor performance in the US. Outside of the US, it did way, way better. Then later in the generation when you could get one of the Super Slim models for dirt cheap and the library was so massive, it caught up in sales in the US.
In Australia it cost over a grand on launch, and it still beat out the 360 for a while. Toward the end you could get a super slim and two games from EBGames for like $100.
For the PS1 disc drives, typically the issue is caused by a rubber band that hardens and falls apart over time. It's a fairly easy replacement. That and greasing the rails.