Ooze, oil, water barrels, and beehives (honey) are the 4 infinite sources that I know of, so they are very useful not just for selling but using those arrows in fights. The charming arrows are the best, but slowest to make in big quantities, since each arrow requires a jar of honey (which can be refilled from beehives indefinitely), so until you collect a ton of honey jars, you won't be making many charming arrows. Poison/oil arrows sell for 20 each, while charming arrow sells for 73 gold each. A good news is that you can apply more than one boost to a given piece of equipment. Thanks to this, you can obtain equipment that suits your needs and, additionally, increase its value.

At that level the vendors sell everything at double the item value, while you sell them at half their value.ДЎ) Metal scraps (buy each for 60), use it to craft a sword with anvil and hammer, which sells for 120 gold.Дў) long branch + shell = crafted staff, sells for 100 goldДЈ) buy arrow shafts (2 gold each) + arrow heads (4 gold each), make an arrow, dip it in ooze, oil, or honey to create poison/oil/charming arrow. Nearly every weapon/armor can be upgraded with appropriate items/substances that improve on their parameters - the so called boosts.

The prices mentioned below are at Bartering = 5. In this one you can still make some money, but nothing like before. Making money from crafting is not as easy as in DOSEE, where you could turn a cheap steel/iron bar into high-value weapons that you could sell for several hundred gold each.

Divinity os 2 crafting