Another way to make money is selling items in your own shop. Your shop can be located at the modern avenue or another claim.
Create a shop
Place a chest that contains the item you want to sell. Type /sellprice <amount> to select how much 1 item costs. Then click on the chest and your shop is ready
Now your shop was successfully created. Players can now buy items at your shop. To see how much money you earned and how much items you sold simply open the chest. At top you can read the before named things. If your shop is running out of items just refill it by putting more items into the chest. Your price is too high or too low? You can adjust it by redo creation of shop.
Deleting the shop
If you want to delete your shop you have to destroy the chest. You can't use this chest now like a normal one so you have to use another one to store your items.
Using a shop
To buy items from other stores you have to click the chest and type in chat how much you need. For example: The user x sells diamonds. User y wants to buy items from x. y need 4 diamonds so he press on chest and writes 4 into chat.
If somebody bought something out of your shop you will receive a message in chat
To get a shop at modern avenue check out /ah. If a shop is for sale you will find it there.