Some of the early 700s were in fact made with blued stainless barrels, I have seen several but all were in 7mm mag. I don't if they came in other calibers or not, BTW the ones I have seen had a small heart shaped proof mark on them and I was told that these were sourced from Hart barrels but I haven't verified this with Remington. I would think that the value would be the same as any other 700 in similar condition, maybe a slight premium for the stainless.