I just ordered this battery last week, but it turns out, it was the wrong one and didn't fit my iBook and the store in which I ordered it from has a terrible return policy in which it'd cost me just as much as I bought it to return it. I originally paid $57 plus shipping and handling.
I know someone out there has a G4 iBook who needs a brand new battery, It's still got the original packaging. The box, anti-static plastic sleeve.
$40 shipped 