The rack itself is sold but I still have the two bike extension for sale.
The downside is that one of the two nuts that bolt the two pieces together has the bolt broken off in it. I took pics of this the best I could. The nut will either need to be drilled/tapped or the nut removed and a new one welded in its place. The rack worked fine for me with just one bolt though (for several months). The rust is just superficial from the winter. It's been in the garage for some time now and will brush right off.
Rackattack has them new with free shipping for 290. I'm asking 175 OBO.
Click pics for fullsize version.