Well, IMO, They're a good gun, and a great round.
The .375 Winchester Round needs no advertising in my book.
Last I saw the NIB ones were going for about $1200.00 Bucks.
As far as the Differentiators for Value, I am not sure really what your asking.
They're a good gun, and a good Round.
I guess Condition, and what people can ask for there's!
It does seem like everything else that they just keep going up in Value, like everything else!
What is your LGS asking?
The ammo is around $75.00-100.00 Bucks for 20 rds. 200- 250 grain
