I've checked it out, could probably do it for 800 or so, but it's a commitment, I'd want to be sure I used it regularly if I spent the money. It's in the fantasy file, next to the zip line and rope tow, lol.
It's a good default/average. Lower with wet snow obviously, higher with colder temps and good snowgrowth conditions higher up. Wind will knock down the high ratios due to fracturing of dendrites.