Yeah that's fair enough! Mine's 3 years old and has moved around a bit, has a few signs of wear and tear, but it works flawlessly - obviously one that's sat in an office unmoved for years and that you have seen in the flesh, as it were, would be more appealing!
However, I personally wouldn't pay more than £900 for it in your shoes, immaculate or otherwise - obviously I wouldn't buy it at all as I'm selling something very similar haha, but they're really not worth much more than that by todays standards.
Whack a loada ram in them and quick hdd's n they still fly though!
Good luck with whatever you decide to do 🙂