AuctionHouse

This enhancement supports

Spigot / Paper & forks only

A decent /ah plugin. Unfortunately, it does have it’s fair share of issues. For example, it is one of the most laggiest plugins in every server and also has caused dupes here and there (rare but still possible).

There are better options out there with far more customizability.

Spigot View AuctionHouse's official Spigot page for downloading the plugin.