hi- my friend's girlfriend is offering me a 15inch powerbook at 25% off retail, still in the box, fully loaded. I'm not really in the market for a new computer - meaning i don't really have the money right now. my ibook is a few years old, and i had been thinking about getting a desktop in a year. I could probably negotiate the price with her, or do some sort of payment plan... she used to work at apple or an apple store or something, so she probably got the laptop at a discount. i have until wednesday to decide. any advice?