I personally would never have paid anything near $280 for a 9800.
And I think you'll be disappointed. For a start, the cards are used, and look around you, the HD 4850 which is a better card is going for $140, you'd be lucky to get $120-$130 for each. One thing you could do is to look for a real hardcore Nvidia fanboy and sell them both to him for $500 each.