Every town has a family of blacksmiths and merchants. Merchants will buy any gear that you don't need, as well as sell a basic arsenal of potions and other items. Often times merchants will be a valuable source of information- they're a gossipy folk that chat with everyone in town. Blacksmiths will not only upgrade your gear, but sell you weapons and armor as well. They also handle appraising gems that you may come across as you save the world.Defeated monsters will sometimes drop items and money pillaged from defeated travelers. The items found in this manner can be better than the stuff merchants sell. In addition, there are natural alternatives to potions that can be harvested- herbs, mushrooms and the like. Although rare, the natural stuff is much healthier for your party members. Naturally, these natural cures are more common in more floral areas such as forests and less plentiful in places like Minero Point.
Silver is the currency of end.earth. There are plenty of ways to spend it beyond merchants and blacksmiths, so mind your wallet!