Bestbuy offers Philips Sonicare - ProtectiveClean 4100 - Navy for $29.99 (orig. $49.99) with free shipping.

Product Description:
Your Sonicare brush head and handle are the ultimate team. The ProtectiveClean 4100 is a gentle power toothbrush with a pressure sensor that protects teeth and gums from excess brushing pressure. The snap-on Optimal Plaque Control brush head features densely-packed high-quality bristles that gives you extra gentle brushing removing up to 7x more plaque vs. a manual power toothbrush. Brush heads wear out over time. Our BrushSync technology tracks how long you have been using your brush head and how hard you have been brushing. It will beep to inform you when to replace your brush head. The easy-start feature slowly increases the power of the brush as you get used to the Sonicare experience and the smartimer encourages a full 2 minutes brushing time as recommended by your dental professional. The battery charge indicator light lets you know when it is time recharge; 2 week battery life. The kit includes 1 Philips Sonicare ProtectiveClean 4100 electric toothbrush, 1 Optimal Plaque Control brush head and 1 charger.

• Removes up to 7x more plaque vs. a manual toothbrush
  Sonicare electric toothbrush with advanced unique technology is clinically proven to remove up to 7X more plaque from your teeth and along the gum line while protecting your gums.
• Pressure Sensor helps protect your teeth and gums
  Built-in pressure sensor automatically detects pressure you apply, warns you, and reduces the toothbrush vibrations automatically to help protect your gums. The toothbrush will make a pulsing sound as a reminder to ease off the pressure.
• Always know when to replace your brush heads
  All brush heads wear out over time, so you'll want to keep an eye on yours to make sure you're still getting a great clean. Our BrushSync technology tracks how long you've been using your brush head for, and how hard you've been brushing.
• Switch between 2 intensity settings
  Switch between 2 intensity settings to make the brushing session comfortable for you.
• 14-day long lasting battery life
  Battery life lasts up to 14 days so you can go long periods without charging.