This Oral-B Pro 1000 Rechargeable Toothbrush drops from $64.98 to $39.98 at Walmart.com, matching the deal we saw in May. Check out over 3,600 reviews at Amazon, where it's going for $50. It has a built-in pressure sensor that decreases the pulses if you're brushing too hard. Spend $50 for free shipping otherwise it's $4.95. Sales tax sis charged in most states.