The Gillette business model is now a legend selling an item inexpensively or giving it away for free, then selling customers a more profitable item that they need to keep that item going. Think of razors and disposable blades, inkjet printers and cartridges, or free mobile phones tied to long service contracts. Now Gillette is changing its time-honored business model a little, and selling the FlexBall razor, which accepts a variety of blade cartridges. [More]