If you Google "rifle stock making cost" there is a pretty good guide $2000-$4000 plus the cost of the wood. Sorry I'm on my phone and don't know how to post a link with it.
Makes you miss the Herters, Fajen and Bishop shops. Herters had some beautiful walnut and maple plus a number of exotic woods that were awesome. I had a Herter J-9 with Presentation grade French walnut that was stunning. I bought it right from the Herters store in Waseca MN in the early 70s.