A method to mass produce and sell electronic devices using open architecture manufacturing model and group-buying business model is provided. A group-buying company receives a plurality of offers to buy electronic devices from a plurality of consumers, and each offer is associated with a minimum requirement for each corresponding electronic device. The group-buying company determines one or more final device configurations of a plurality of electronic devices that satisfies the minimum requirements of all the offers, and all the electronic devices are substantially identical to be sold to the plurality of consumers as a group-buying deal. The group-buying company then arranges a single run of the identical electronic devices to be mass produced by a third entity. Finally, the group-buying company supplies the identical electronic devices to each of the plurality of consumers.