Buying

Buying is the act of acquiring an item against gold ore. It can only be performed in some buildings (workshop). It will not work if you don't have a free slot in your inventory (for the item) or if you don't have enough gold ore. After buying an item, a fixed amount of gold ore will disappear.

First, you need to enter in a workshop. Then a selection wheel will appear with the different purchasable items and their respective price. To buy an item, just hover one icon (its name will appear) and then click on it. There's an unlimited amount of items in one workshop.