Not Too Expensive

This data pack removes the "repair_cost" component from all items in the player's inventory while they're at an Anvil.

This pack works by tagging a player whenever they open the Anvil UI and running an item modifier on all of their inventory slots every tick. When the player moves away from the Anvil, they become untagged and their inventory stops being processed. This is to prevent functions from being called constantly when it's not necessary.

This pack is made for the as-of-yet unreleased 1.20.5 version of the game. You must play with version 24w10a or later for this pack to work.