Network-based system for selecting or purchasing hardware products

System and method for receiving purchase information for a client system, e.g., a measurement system. A configuration diagram visually representing a current configuration of the client system is displayed. Multiple product icons are displayed representing products (hardware and/or programs) available for use in the client system. User input is received graphically associating at least one first product icon with the configuration diagram, where the first product icon represents a first product, and the user input indicates a desire to purchase the first product. An updated configuration diagram is displayed representing the configuration of the client system after receiving the user input, including the first product icon. Pricing information for the first product is displayed in response to receiving the user input. User input initiating purchase of the first product may be received in response to displaying the pricing information, and the product may be provided to the user.