If you have to have a stainless, you'll probably pay $700 or more for the rifle and then part it out. They're not too uncommon on Gunbroker, but check with LTLR or Broz as to what caliber(s) to start with so that you have the right bolt face.
You'll probably get $50 for the barrel, $35-50 for a synthetic stock, and you'll have to decide if you want the factory trigger or an aftermarket one.
I know of a Weatherby gunsmith in Wyoming if you're interested. He has put together some nice stainless rifles that I've seen, and did a bit of work for me as well.