For example, if you're level five and do a level 3 enchantment, you would go back to level 2. The cost to enchant items is the experience you gain by killing mobs, breeding livestock, mining resources, or using your furnace. Keep in mind, you might not be able to enchant all things at level 1.
If no options come up, keep taking the item out and putting it back until you get one. Once you've put the item and the lapis lazuli in the slots, choose an option. To enchant items, you must use the experience orbs leveling system.
