A lot of monsters do not have gold in this game (like it would be the normal way), but they drop items, that you can exchange for money by selling them: Dragonfly Wings, Raw Honey, Muskrat Meat, Bear Meat, Precious Nuggets etc. are only a part of all the items you can sell for money.
There are also other ways to find gold: one of the wells in the Green Grass fields holds 500G, and playing in easy or very easy gives you 100G and 200G more from the start respectively.