Minecraft wiki entry for Helmet, associated text: In Bedrock Edition, novice-level armorer villagers have a 25% chance to sell iron helmet for 5 emeralds, 1⁄3 chance to sell chainmail helmet at journeyman-level for an emerald, and 50% chance to sell enchanted diamond helmet for 8 emeralds at master-level. Apprentice-level leatherworker villagers have a 50% chance to sell leather cap for 5 emeralds as part of their trades, and 50% chance to sell an enchanted leather cap for 5 emeralds at the master level.