YES!!!! you need to trust everyone here. i have mine and im happy my ibook broke broke like 3 times for the same part.Which would have cost me about 300 just to fix. So yea its worth the money you will be happy, if something was to happen to your Mac .
I've had my iBook G4 for over a year, and the worst thing thats happened is that I've lost my feet. I don't have AppleCare, but its up to you if you think you should get it or not.