Never has the expression "put your money where your mouth is" been more accurate as it is with the Philips Sonicare Flexcare Platinum toothbrush. This mouthful of a name designates a smart toothbrush made by Philips that is electric, with sonic technology for up to 31000 strokes per minute, and Bluetooth to connect to your smartphone, and which costs a mouth-foaming, jaw-dropping, tongue-biting, teeth-gritting, $180. Unless you're born with a silver spoon in your mouth, this is a bitter pill to swallow, but you can grab it for $160 on Amazon now, with an additional $20 off from a coupon clip that applies at checkout — you should know the drill by now.

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