SwiftPot
First Step
I really like the shop and all of that but it does not seem like the spawners are actually worth it. The materials from them don't seem as cost effective as a sugar cane farm or cactus. You should add all of the spawners and change some prices of the materials so spawners become more effective. Like iron should get increased to make iron golem spawners worth it and more profitable. Sugar cane, netherwarts, cactus and all that should be the entry stuff while spawners and the spawner grinders should be the stuff that rakes in cash. Also there should be a command to show the top ten richest players with the highest balance.
