The blades are quite a bit more common than the scabbards, though they surely don't show up every day.

The rare scabbard is of the simple metal hook style which swivels 360°. Also, the mouthpiece is VERY slightly trapezoidal, but enough so that the blade will only go in one way. No other Krag scabbard is worth a premium, so don't overpay for an 1894 blade in a later scabbard.

What is the price of the set? 

I was happy to pay $225 a couple of years ago for a decent blade, and scabbard having two significant dents. I've seen other blades since, but not another "keystone" scabbard.