That Mountaineer is an interesting rifle. It looks like a fluted bolt with the Lehigh adapter added. Which would make it a very clean rifle to shoot.
As for the fact of the bolt. I'd rather have a bolt gun then a drop action anytime. Bolt guns are not that hard to clean. They have a strong action. It gives you a once piece stock so the rifle harmonics should be better. I just don't see it a problem.
As for their price, any time you purchase factory direct the prices are high. Wait a while for them to hit the stores and they will come down.