My Powerbook is from June 2004. 15" 1.5 GHz G4, 512 MB of RAM, Combo Drive, 128 MB VRAM, 80 GB 5400 rpm HD. How much do you think I could get for this on eBay or possibly selling on here? The new iMacs are tempting me (20" is pretty darn cheap). I've realized I don't really need the portability of a laptop so much, and wouldn't mind having a desktop again.