Perhaps, I'll talk it over with him tomorrow. If I did go the eBay route it would probably be to get the 9600 as the 6600 is PCI-e and would break his budget with p&p. The advantage of getting it with scan is the shipping would be minimal with the rest of the stuff I'm getting.
I've heard that if you can saw off the ends of a PCI slot, you can use a PCI-e card in it, but he is far too protective of his new PC to let me near it with a dremel!
EDIT: Looks like the seller only wants paypal...
Cutting the PCI slot will not allow you to use the PCI-E card, by all means you can put the card in but it wont run lol