I must admit though, whenever I see loose discs on eBay I cringe, I wonder about the circumstance on how it managed to be separated...
From personal experience with friends:
1) Someone threw out their cases to keep the games in a binder as a space-saving measure
2)......
Loose discs are OK with me. I just bought a bunch of games in a binder at a thrift store.
For my $10.99, I got the binder, 10 "PlayStation" games, 19 "PlayStation 2" games, 1 "PlayStation 2" magazine demo disc, and a "PlayStation 3" game. Also, included were a few movie DVDs. Most of the discs seem to be in "fair to good" condition or "better".
I will most likely place the"PlayStation 1" in brand new jewel cases (which I all ready have), I will use my ink-jet printer to print the titles on paper case inserts. This will allow me to insert these acquired games into the other "PlayStation 1" games in my collection.
I will most likely place the "PlayStation 2" games into a binder, but some may be put into a new "DVD case" or a used "PlayStation 2"case, with covers that I print, so that they can be displayed.