What Mending Does in Minecraft: How to Use & Find It
Is it possible to get mending from that type of villager? : r/Minecraft
Isn't Mending considered as a Treasure enchant ? If I have read the wiki correctly the minimum price for mending should be 16 (without cost reduction due to hero of the village) :
Fishing Rod - Minecraft - MC Wiki
Concrete - Minecraft Guide - IGN
Minecraft Walkthrough and Guides | VGKAMI
How To Get A MENDING VILLAGER in Minecraft! - YouTube