The AcuInvoice Simple Store is a FREE PHP/MySQL-based storefront optimized for the delivery of digital goods such as software, images, and music files. The script interacts with the popular subscription service AcuInvoice, and therefore supports popular payment gateways, including PayPal, Google Checkout, Amazon FPS, 2Checkout.com, and Authorize.net. Though lightweight, the store includes a number of important features