Are you still looking for a Capture One Pro 6.xx license?
I have a full version of COP 6 license for sale. Reason for selling is that I already have a full version, but recently attended a Phase One Certified Professional course, where the course fee included a COP 6 license and Capture-U subscription.
The 1 year subscription to Capture-U, I can also offer. (This is a very detailed online tutorial for using Capture One Pro, as recommended by Phase One)