1. A method, comprising: at a vehicle data system running on one or more server machines, receiving a specified vehicle configuration; determining pricing data corresponding to the specified vehicle configuration, wherein determining pricing data comprises applying two or more models to a set of historical transaction data, wherein the set of historical transaction data comprises data on a number of transactions associated with vehicles of the specified vehicle configuration, wherein the number of transactions is less than a first threshold, wherein the two or more models include a general price model and a data scarcity model; and generating an interface based on the pricing data.