Customers expect that when they purchase a product online that it should be delivered to them as quickly as possible. Not being able to deliver what they expect, when they expect it, will mean little chance of that customer ever returning to your store.
With Arpastart eCommerce you have the option to allow the system to manage your inventory levels for you, reducing the available stock with each purchase made, and ensuring that you never sell more than you have on hand.
There is also an option for store owners to be able to sell products when not in stock, which is indicated by the product status to the customer. The status created would inform the customer when they might expect to receive the goods. If you know that from the time of order, you can get hold of that product within three days, and send to them out the following day, a product status of Dispatch in 4 Days might be used when your product is out of stock. You get to create your own product statuses, so can make sure that they match the product availability and your business processes.