A project through which the first user can access the program, add new items, the serial number of the item, and the quantities and price of each item. The second user (the seller or the sales department) searches for the item in its serial number and adds the amount purchased by the user to the purchase list, which is the same for all goods purchased by the average user. Some other features can be added here such as offering coupons or purchase discounts. If the number of products reaches a certain price, the seller confirms the purchase. Masht from the original list of all products, then finally prints the purchase invoice in two copies, the first copy of the customer and the second copy remains in the store archive.