I have seen a few, but not recently, and they were fiercely expensive.
There is a really fancy chef's supply place on Scalabrini Ortiz, between Cordoba and Santa Fe, that, I believe, has them. They did, anyway, along with real Birki clogs, chili pepper chef pants, and other high end imported high end stuff. The prices run between double and triple what you are used to paying in the USA.
I bring my own Global knives down when I come.