Recently talked to my dental hygienist and she said an electric toothbrush is a good idea. This one is $65 with the travel case. Best Buy is selling it at $40 without the case. Unless the case is worth $25, best buy is the better buy here.
You’re disappointing me, woot. I guess the mothership comes for all of us.
Confirmed! Same model. But much cheaper at Best Buy. But… from reading the one star reviews both on Amazon and Best Buy, don’t bother as this won’t last. Glad I checked because for just a moment I was tempted…. 
Unless I’m missing it, I don’t see that the one on BestBuy (4100) has the DiamondClean heads that ours does.
As far as I can tell Philips’s health care products are designed to die after 2-4 years. I think I have bought 4 of these Sonicare toothbrushes in the past 10 years as they allow some water to get into the battery compartment. I have a Philips wet-dry razor that is dying at 4 years for the same reason.