Maybe I'm old-fashioned, but I can't really imagine "cross-country skiing" without moving my feet. My old-school NordicTrack Excel works great for me and provides that classic steady skiing motion. The SkiErg looks like it would really work the quads and upper body but the movement itself seems unnatural. Also, I think you could basically get the same effect using a lat pulldown with rope by simply including the leg movement. I have a redneck setup in my barn (it consists of a pulley mounted to a rafter, a length of rope with knots strategically located for multiple attachment points, and a carabiner to attach weights) which literally cost me a couple of dollars to assemble, and I could mimic that exercise fairly easily. Not that I have any actual experience with the SkiErg, of course; that's just my reaction based on viewing it in use on their website. Yes, I admit I'm "thrifty". That's probably my Scottish heritage showing.