There are NPCs that you can buy profession knowledge from for kej
https://www.wowhead.com/news/buy-10-profession-knowledge-points-with-kej-in-the-war-within-346116
Not sure if this is a widely known thing or not, just found out about it last night.
https://www.wowhead.com/news/buy-10-profession-knowledge-points-with-kej-in-the-war-within-346116
Not sure if this is a widely known thing or not, just found out about it last night.