How To Create a Chestshop
Step 1: Place a chest in the area you would like to set up your shop.
Step 2: Put the item you want to sell inside of the chest. Make sure that other than that item, the chest is empty.
Step 3: Sneak (hold shift) and right click to place a sign on the chest.
Step 4: Leave the first line blank. Don't type anything in it.
Step 5: Type the quantity on the second line. This is the number of items that will be bought per click.
Step 6: On the third line, type a B if you’d like people to buy items from you or an S if you want people to sell items to you. Also on the third line, include the price without a currency sign.
Step 7: Type ? on the fourth line, it will automatically be updated with the name of the item when you finish.
Step 8: Hit Esc to close the sign gui. You are done! The first line will autofill with your name if you did it correctly.
Step 9: (Optional) Setting a warp to your shop will help players find your shop and buy from it. For help on setting up warps, click here.