As with many other products, it is hard to know the exact value because electric toothbrushes come in a variety of price points. Our experience with testing electric toothbrushes using tablets to detect plaque buildup has shown that the cleaning performance of different models is not very consistent. Other features are what will change. You will probably have to pay more if you prefer post-brush graphs, many cleaning modes, and longer battery life. You don't have to pay more for better results if the flagship model is available.