As with the games preceding Etrian Odyssey IV, only a few of the weapons are available for purchase at Berund Atelier in the beginning, but more can be unlocked by selling materials to Wynne. All weapons sell for 40% of their buy price. Those with no listed buy price are typically rewards from quests or found in chests, and sell for 100en. The forging system, first introduced in Etrian Odyssey III, also makes a return in Etrian Odyssey IV with more effects that can be forged onto weapons. Requirements list the materials needed to buy and/or alter the item through forging.