How to stir up some money. (The Witcher 3: Wild Hunt)

Never before had I experienced a problem with money in The Witcher, on the contrary, I even thought, what for are they to me?
And now a house is being built in Toussaint, this bespectacled man constantly requires investments. There also appeared the grandmaster's armor, which would require a lot of dough to make. There was no trace of my 100K in general, as soon as I arrived in Toussaint, I could not even understand where I spent all of them.
And now I do not have enough money. But I want to make the armor of all schools of the grandmaster level, and put things in order in the estate, well, it's so easy to buy any garbage. And I don't have more than 2000 left in my pocket.
They pay little for tasks. I tried to hand over glass containers, so there they generally give a penny for it. I do not know how else you can settle down with money. Please tell me the legal way, that is, without cheating. And so, if you can sell weed there, or transport and distribute something, then I'm all for it.