Abstract: Examples described include online automobile selection and sales systems and methods. Systems and methods disclosed herein may provide a start-to-finish web-based automobile shopping and purchasing experience. Examples described may include a variety of software modules including, but not limited to, a buying module, a selecting module, a valuation module, a financing module, an interface module, and a data integration module. One or more software modules may be integrated into a single module and hosted on the same or different servers. A consumer may be able to obtain a commitment to purchase a trade-in vehicle at a specified price, a commitment to sell another vehicle at a specified price, and an approved financing package without the need for personal negotiations. In this manner, examples of the present invention may facilitate sales of automobiles over the Internet at any time of day or day of the year.