In order to use the in-store printing method for online ordering you will need to purchase the following hardware components.
Mac Mini - Cost $499 (available from Apple)
Star Micronics TSP100 USB Receipt Printer - Cost usually around $185-200 (available on Amazon)
Your choice of monitor - Customers commonly buy these
Your choice of keyboard and mouse - Customers commonly buy these on Amazon
Your choice of external speakers - Customers commonly buy these on Amazon