A billing system that allows a consumer to order products from computers connected to the Internet, wherein the consumer is automatically billed for the ordered product by its telephone service provider. When a product is ordered over the Internet, a plug-in component of the consumer's computer establishes an Internet connection to a billing server. A billing server component transfers an encrypted version of the product to the plug-in component. The plug-in component then disconnects from the Internet and establishes a point-to-point (PPP) connection with the billing server. During the PPP connection, the billing server component transfers an access key assigned to the order to the plug-in component so that the plug-in component may decrypt the product. The consumer is charged a unit rate or “drop-charge” for the product by the telephone service provider using a premium telephone number assigned and administered by the telephone service provider.