This project is abandoned and its default file will likely not work with the most recent version of Minecraft. Whether this project is out of date or its author has marked it as abandoned, this project is no longer maintained.
Warning: This project is experimental. Its files will not synchronize across the CurseForge network.
This plugin adds a command (this is for selling) and a GUI for buying items. The sell command is
/sell_item <this part should be a list of your inventory (the item you want to sell)> <Lists all Minecraft items(what you want in return)> <how much of the item you want in return (can be larger than a stack)>
Also to get to the buy GUI you need to type /buy_item