Yes there is an expense to having the hitch installed but once I had done that I do not regret getting my Thule hitch rack. It locks to the hitch so I do not have to worry about someone easily stealing my rack. It is the style that lets the bike tires rest in a trough with a hook that comes down over the top tube. This hook then has a key lock to secure the bikes. This style rack is very stable, easy to use, and somewhat secure.

mike