Contemplating buying a used D600 on eBay
+1 for refurb... If the service announcement from Nikon hasn't affected the supply/demand, and you're not in a hurry, look to see if Cameta or Robert's has any more fire sale refurbs on eBay. I got mine in October for $1350... which at the time was $200-300 under used auctions but I had to watch like a hawk because I missed two auctions before I snagged mine. If you're concerned about shutter debris/oil, you can read the whole spectrum of experiences on here... a new thread was started about every couple of weeks for a while.