So what iw the going rate for an M1 carbine in today's dollars?
Actually that figure is VERY understated, it sounds like the official government inflation adjustment which is used to hold down the social security checks. The last carbine I was offered was priced to me at $600. and that was in 2008, it was an Inland, a Winchester would have cost more. At the same gun store I was offered and almost bought an M1 “tanker” in .308 with a four inch shorter barrel than the M1 Garand in 30.06 for $1300. I made a deposit on it but after thinking it over decided I had more pressing needs and canceled the purchase. The store owner didn’t blink an eye, he gave me my money back, picked up the phone and called someone else to tell him to come in and get it.
Depends on rarity, correctness, and condition. Anywhere from $600 to $2500.