i've seen them go for $1 a lb used.. but you can NOT afford to ship them.. if all the weights were there,, you could get $390 a side including the center disc. then the lug adaptors, four requred for each side are about $14 BUCKS apiece at the dealer..
so $800 is not out of line.. not at all
on the other hand, I picked up a set for $200 minus the lug adaptors.. sometimes you run into good deals...
so if you can get from 200 to 800 depending on if you can find the right person... and close by..
good luck.. bill