The store is a place for doing business, which can only be on your own plot. Selling anything from raw materials to finished products, vehicles, or any resources, will be done here. Simply click on your store and list the items you want to sell and the cost, and your sell order will be on the marketplace for all to see. Also, you can create the list of items you would like to buy in your store as well. Then anyone can see your sell order and come sell you those goods, and this way you can get your goods delivered.
For example, create a sales order for clay, specify the quantity and unit price.
For example, create a purchase order for wood, specify the quantity and unit price.