My mother just saw my new macbook pro retina 15 inch, and she wants an older computer with just apple capabilities to learn. She is in the $100-$200 price range, and is looking at the 15 inch powerbook G4 to just learn apples software, and have a computer for web browsing and email only. I saw some on eBay, but not sure if they are real, or in good shape. Does anyone know about them? Does anyone have one that the are looking to sell?