I am about to purchase the same Yakima rack. I looked at both companies, and decided they are both great. I don’t think you will be disappointed either way. I plan on purchasing mine through rackattack.com. They list the KingPin2 for $136. They offer free shipping on orders over $150, so I plan to get a hitch lock as well to push me over $150.
By the way, I have no local REI. I wish I did.
Rack Attack Link
KingPin2 at Rack Attack