Great Sources with U6/7

Cooking. And in some part, scholar items. A Westfold cook and a fully repped Guild Cook can turn an amazing profit. The buff and regen foods you get from Stangard by I think their rep vendors routinely sell, even the non critted for several gold... Ask Artamishia, she makes a ton this way. Scholar mat selling is also a good avenue, as is sigil and lootbox farming. Gold can be made fast and furious from the great river items you can craft. I see the shoulders for heavy armor easily going for 20g now from great river.