In some examples, a server may determine a browsing history associated with a user, identify activities associated with purchasing a device, and determine features of the device. Individual features may be assigned a corresponding priority based on the browsing history. A machine learning algorithm may predict a configuration of the device based on the features and the corresponding priorities. The server may create a web page that describes a specification of the device based on the configuration and includes a comparison of at least some of the features of the device with other features of similar devices. The server may send a notification with a link to the web page. The web page may enable the user to modify the configuration and modify a price of the device. The server may receive a purchase order to purchase the device and instruct a manufacturing facility to build-to-order the device.