I’ve heard that on some servers Primal Mana sell for around 300 gold per! Hopefully you are lucky enough they they sell for more than 10 gold. It wouldn’t be right for me to skip something just because it doesn’t sell on my server. Anyways, this location is in Blades Edge Mountains clear up at the top.
I can’t quite see how many I got but this spot, like the rest yields close to the same as the others. Within 10 minutes you should average around 20-30 motes so roughly 12-18 primals per hour. Meaning, depending on your server, 120-5400 gold an hour.