If I'm looking at replacing parts on a $3k rifle before I even buy it, I'd reevaluate just how awesome this rifle is.
There's nothing wrong with the factory stock, it's a matter of preference.
Like my PWS MK114 MOD2, they are 2k+, I hate the BCM stock and BCM trigger, so I'll change them. Does that mean the gun is overpriced? No, that means I have a gun that I can make my own, to fit ME and my preference.