Amazon offers the Oral-B Pro 5000 SmartSeries Bluetooth Rechargeable Electric Toothbrush for $99.99. Clip the $15 off coupon and apply coupon code "30OB5000VD2" to cut the price to $54.99. With free shipping, that's the lowest price we can find by $45 and within $5 of the best deal we've ever seen. (We saw it for $50 on Black Friday.) It features five cleaning modes, a pressure sensor, and real-time feedback via the Oral-B app for iOS or Android.