As is with out more information 7 to 800 are generous estatmates. Barrel throat and muzzle wear, Op rod piston and gas cylinder wear, Parts wear and timing check, Rear sight detent wear, Stock/hand guard condition, Stock has arsenal markings?, are parts marked and correct to the reciever? is barrel marked and correct to the reciever. There's a ton of things that make an M1 a 700 dollar or a 2000 dollar gun. If you ever come to the Greenville SC gun show PM me and I'll be hapy to gauge and evaluate you rifle for you, I do it all the time for people.