Amazon offers the Oral-B Pro 5000 SmartSeries Bluetooth Rechargeable Electric Toothbrush, model no. PG-6952, for $84.99. Clip the $15 off coupon on the product page to cut the price to $69.99. With free shipping, that's the lowest total price we could find by $15. It features five cleaning modes, a pressure sensor, and real-time feedback via the Oral-B app for iOS or Android.