My goodness, I remember the crazy second-hand prices revolving around the PS2's launch. Some of it was quite hilarious, though, seeing PS2s listed for over a million dollars. At least my brother got his at launch because he preordered it. Sadly, his unit didn't last anywhere near as long as yours. Meanwhile, my 2002 unit is still working, which is good considering all the PS2 games I need to play.
As for getting incomplete games, it's a necessary evil. At that point you either play that game or you don't. It's annoying, though, because you're left with those oddball games in your collection with no labeling (although you can find some here). In regards to my PS2 collection, I only have one game like that - Stella Deus - and it bugs me. Maybe Atlus will throw me a bone one day and reprint it.