seriously... if you have a torque wrench and an 18mm socket, you and your buddy/gf/wife/etc. can put it on (you don't need a second person but it helps to have someone hold the hitch when you get the bolts started).
my dealer wanted 180 bucks to install mine. i chose to do it myself and it took me all of 10 minutes (tops... i didn't actually time it, but it actually might have been less time than that). i obviously am in the wrong business because if i could charge 180 bucks for 10 minutes of labor, i'd be rich!