Midwest Service Closeouts offers the Oral-B Professional Deep Sweep 4000 Electric Toothbrush 2-Pack for $77.99 with free shipping. That's the lowest total price we could find by $4, although we saw it for $13 less in August. Each brush features a pressure sensor (to signal when you're brushing too hard), timer, four brushing modes, two brush heads, and in-handle display.