Finding stuff is indeed a active hobby, finding new ways to contact people, find places hear stories, being an Sherlock Holmes at times. That's how it goes. Sometimes it's really hard finding nothing worth a while, sometimes you make the score justifying all the work put on the hobby. Don't take too much pressure
It's easily notiseable. Pre G3 machines are more difficult to find. Those that are cheap/free, are usually in bad shape and the better ones the owners think they are treasure and ask money for them (sometimes less, sometimes more). I've seen insane asking prices for basic PPC stuff from the 90's lately wich is just plain silly. If something goes up in value over time, it would be 68k machines and before, times of Apple II and, of cos certain triumph-of-the-design items like Cube, iMac G4 and of cos, raretie, TAM.
Oh, i'll keep my eye on the CD bezel. I have a friend who have lots of project shaped iBook G3's around. What were the colors you were looking for? PM me with details ok?