$470 is a great price. I don't know how difficult / easy it is to set up as we bought ours with the trailer and the dealer installed and set it up when we were doing the paperwork.
FYI, it will make some noise from the bars rubbing against the brackets, that's normal for a little while. Especially noticible when going slow and making sharper turns such as pulling into a gas station.
I found it easier to remove the anti-sway bars on the straight and level prior to backing the trailer on to the site. You get more jacknife ability and less tension on the bars when you go to remove them. True you have to run the jack down and remove the weight from the bars and then raise the jack again.
Be careful, as there is sometimes a lot of tension on those bars when you go to remove them.