There's a possibility one of our older machines at my office is going to be upgraded, which means I might be buying it. I checked out what they are going for on eBay, but prices all over the place, plus the ones I found were refurbs with damage in some cases. The machine is a 17" 1.83 Ghz CoreDuo iMac, 1.5 Gigs of RAM, 160 Gig HD, CD/DVD drive, airport card, new aluminum keyboard, OS 10.4. The machine is in decent shape, but it does get run 8 hours a day, 5 days a week. I was thinking $350-400, but some input would be appreciated.