I just ordered mine from the dealer and did the labour myself, nothing overly difficult, only thing the dealer or similar will have to do is the rear shock, assuming you revalve it, but i had heard the valving is hardly different than what was in already so i never bothered with mine. did cure the squatting issue though. have yet to try it on snow though
I did the 2010 suspension upgrade on my 09 if I remember I paid 625 for the kit, revalving was 200, new sliders 40 and I got my new rails anodized for 140, so close to a grand. Installed myself.