Hi there: I am upgrading to either the 17" iMac or the 1.6 Ghz G5. But to do so, I need to sell my beloved G4. Here's the skinny on it: AGP 500 40GB 7200rpm HD 80GB 7200rpm HD nVidia Ge Force 2MX 32 MB vRAM 1 GB RAM Pioneer 105 Superdrive AirPort card installed Comes with MAC OS 10.1 install disk. Also, would come with Sony SDM-X52 15" LCD Display and ADC-DVI adapter. A guy at work is very interested in buying my system. How much should I quote him for a price? any tips strongly appreciated!