FyrenGaming submitted a new resource: GUI Shops - Adds the ability to create GUI based shops Read more about this resource...
As of right now, this plugin works in 1.12, the only issue that I have found is that it throws a null pointer exception in the server log when a player tries to open a shop that does not exist. I am currently working on another project at the moment, which shouldn't take too long for me to finish. After I have finished I will go through and make sure I upload an updated version for this and make sure that is fixed