How to create a chest shop:
1. Place a chest on the ground
2. Place a sign on the chest and write:
- Line 1: Leave this line blank (It will automatically update with your username later)
- Line 2: Amount of items to buy or sell
- Line 3: Combination of Buy and Sell prices.
- Below is a screenshot of a chest shop where you can Buy 64 of an item for 100 or Sell 64 of an item for 50
- Line 4: A question mark (It will automatically update with your item of choice later)
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3. Right click the sign with an item in hand to finish setting up the shop (Note that the first and last lines update when you right click the sign!)
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Now anyone can buy 64 stone for 100 and sell them back for 50