Those are the Vueltas that Bike Island (same people as Bikes Direct) sells on ebay. (type in "vuelta fixed" into ebay)

They go for about $155 shipped. However, the seller on CL may have stressed and tensioned them for you, which they need. Mine came not too stressed (they say they are handbuilt) and I had to do it myself. If you weigh a lot, I would stay away. If you're under 175, go for it.