Apparently, they are not available either. I cannot find anyone selling them.Most of this information was covered in the last thread you madeThere's a massive difference in time, volume, development and technical difference into why NVMe over USB has not been rapid and cheap to market. There are a couple of Thunderbolt to NVMe Storage devices since they port PCI-e between the device and the system. http://www.netstor.com.tw/product_info.aspx?PID=PID_171026055872595
They aren't cheap, but they'll get cheaper over time.
Apparently, they are not available either. I cannot find anyone selling them.