Minecraft wiki entry for Building_a_metropolis, associated text: Try having a currency so people can buy and sell things in your city. Good currency is usually something with practical value that follows a non-finite standard to prevent inflation. Therefore, great currencies to use are emeralds and emerald blocks (which are worth 9 emeralds each). This has the added benefit of allowing you to make villager shops with no difficulty. Another good currency would be Brick = $1, Iron = $10, Gold = $25, Copper = $40, Diamond = $50, Netherite = $75, and Emerald = $100. Here's a list of common currencies with notes about their usage: