Apparently you can get lots of Dosh from marketing, and I would like to try, but if I tried right now I'd lose all my Dosh... Any tips?

k here are the basic tips that i used when i was a marketeer(idk why i stoped):
1-chek the price of item that you are going to buy in market.
2-make shure the item is popular.
3-always lowball so you can both reach in the middle and get a good offer.
4-sell it in market and make shure that you get atleast 500tc effort if the item worth 5k+ in torishop.
i used to get atleast 5k everyday with using this tips when i reached 10k+ as i can remember.