It cost me $325, but I've got a functional iBook after 4 mos. of borrowing time on other computers. I can't tell you what a relief it is.
Turns out the previous owner broke the logic board when he dropped the machine. There was a loose metal nut rolling around the innards, and I suppose I'm lucky I didn't blow the thing up.
I think a new iBook is going to be in the works, I just haven't decided what I want to do yet. This one's two years old, but as long as I can run OSX and still pick up the Internet, this thing is a beautiful machine.
After 4 mos. of Win-doze, it feels like a dream using a powerful operating system. I almost forgot how intuitive OSX is. Wow ... a little taste of heaven.