While wandering around Edinburgh on an Easter holiday we spotted a pair of used Nikon 70-200 F2.8's... One was in perfect condition for £1300, and the other had a few superficial scratches, but was up for just £956 (US $1420). I tried both and decided a few scratches makes no difference what so ever, and jumped at the latter - I don't know about other places, but in UK you can't get the vr1 version for less than £1000 normally! So, after renting one a few months ago, I now am the proud owner of this beast...!
As long as the optics are perfect, and it works, i'd have made the same decision. Lenses are made to be used anyway, they're not ornamental Ming vases, though the 70-200 f2.8 is a work of art!