This Oral-B Professional Care 1000 Electric Rechargeable Power Toothbrush lowers from $74.99 to $39.99 with free super saver shipping at Amazon.com. This $20 Mail-in Rebate cuts it to $19.99, the lowest price we could find by $20. The 156 reviews so far give it a near-perfect rating. It removes up to twice as much plaque as manual toothbrushes and alerts you when brushing too hard. There is no sales tax (except in KS, KY, ND, NY, and WA).