i got 5 Moabs with tires for $250. All 5 rims were mint and the tires were basically no good. But then again i only bought these for the rims... and its funny cause i was still able to turn around and sell the 5 tires for $60 and the 5th rim for another $60
Search your local Craigslist, those JK guys are ALWAYS looking to unload those rims/tires for cheap.
$700 sounds a bit steep, especially if they are scraped up.