Well
Beside of NR AR10 style approx cost from 2K Canadian,bone only and up to 4k something like hunter ATRS
If you are looking for 30 cal semi auto not a lot of choice
M1A NM or Super M from SAI , even M1A loaded is + 2700$ or higher
If you go with m14 LRB , Fulton , Smith Ent or Bula is gonna be + 5k .
What I see semi auto NR class are expensive ( I'm not talking about those toys , surplus , Starwars shape , or garbage Norinco quality . Only real battle rifles )
Even 70 years old used , banged , repaired and part replaced M1 Garand is + 2500$
A good NR semi auto military grade is + 3500 before tax Approximately and FN scar is gonna be new and luxury class . I think 5k price tag.