Minecraft wiki entry for Trading, associated text: This profession is useful in obtaining emeralds, as they buy sticks, which are easy to get. In addition, if you do not have Infinity on your bow, you can buy lots of arrows for a relatively cheap price. If you max them out, you can get hard-to-obtain tipped arrows, as well. If you want them, level the villager up with sticks or buy a bunch of bows/crossbows unless you can afford the other trades.