MW is on the high side. A lot of the value depends on matching parts and condition, as you surely are aware of. What are you looking at the M1 to be? Collector? Shooter? Project?
As a formal shooter the MW may hinder your scores. Making anew barrel a must. New stock makes a collector's piece moot unless your idea is a restoration project.
Personally I would not go over $750 for a mix parts FG rifle. The rifle would have to be in pretty good shape for that price. Finish and wood, mix of parts and safe working order. Can you check headspace and throat erosion? A new barrel can be between $200 and up, depending on how much you can do yourself and the barrel you put on it. Something else to take into setting your price limit. Twenty years ago the CMP/DCM grading system did not have FG. Just Service and Rack.
Also check the Op-rod for wear and peening.
Good luck and happy shooting
Post us some pictures if you buy it.