The 720s are currently available from Velo Orange.
http://www.velo-orange.com/tecrcacr.html . $27 per pair.
I ordered a couple of pairs; they're not as nice as the picture. Typical Tektro "pot metal" finish and appearance. And they're also typical Tektro fit on the posts; ie. they rattle. I haven't used them yet, but I assume they perform like other Tektro products: adequately, but nothing more.