Original: https://www.youtube.com/watch?v=FKwov5UlqU8
I made this video because I had a hard time finding the PVP vendor myself on the new PVP Island - Ashran. Look below for further explaination:
1. Go to Ashran (Think you can do this through your Garrison)
2. Afterwards you have to go to the Warspear Outpost (as shown in the video)
There are two vendors. One for Honor and another for Qonquest currency.