The classic M1 Garand is chambered in 30-06. The M1 carbine is chambered in .30 carbine a pistol like round. Generally a Garand is anywhere from $1000-$2000 obviously depending on condition, maker, year, wartime original etc. etc.. The M1 carbine is generally from $700-$1000 also depending on alot of factors. Finally ammo for both can be had and is not super high priced but isn't super cheap either I guess. .30 carbine ammo is a bit cheaper(less than $1 a round) generally than 30-06($1-$2 a round for most) though. Not a big load of info but hopefully it answers some of your questions and helps.