They are explicitly limiting this to use cases that don't compete with self-driving, so it is likely bound by licensing and non-compete agreements.
So don't expect seeing one of these sensors in a competing self-driving vehicle any time soon.
Lately I've seen used Velodyne 3D LIDAR units being sold on the site for (compared to new) dirt cheap. Granted, much more expensive than used SICK or Hokuyo 2D sensors - but that would be expected.
The fact that they are being sold on Ebay at all is a fairly new and interesting development; the question becomes "where are they coming from"? That is, what is the secondhand source they are being pulled from.
In the case of SICK and Hokuyo sensors, it has generally been industry or research. For Velodyne sensors, they were explicitly made for self-driving vehicles (though they've found other markets since).
It makes me wonder if one or more the established self-driving vehicle companies are shedding the tech in favor of some other system...?