I want to first apologize for my absence. I know many of you have reached out to me, asking for an update or even reporting bugs that I should have addressed a long time ago. For this reason I come out with this update to make up for my absence. It's a pretty large update, I have gone through and recoded all the classes from the ground up basically, and added a number of optimizations and reflections to future proof this plugin (unless some absolutely major update comes along). The mechanics of how this plugin alters the exp cost amount in the anvil has modified with a safer alternative. Currently however, the plugin only supports now 1.13 - 1.14 but I'll hopefully come out with a solution soon that will support earlier versions.
Important: The configuration has been modified slightly to support earlier item material identifiers from before 1.13 (hopefully support will be added for those earlier versions soon) and the newer identifiers for 1.13+ This means remove your config and let a new one generate or else the plugin will not work.

Also those that have addressed to me regarding the ability for players to mix enchantments with items that shouldn't be enchantable, e.g. sharpness 5 on a wooden stick has been resolved with this update.

Also permissions have been modified.
Admin Perms:
maxrepaircost.admin.reload - Reloads config
User Perms:
maxrepaircost.help - Pulls up info menu