Walmart continues to offer the Philips Sonicare Essence Sonic Electric Toothbrush, model no. HX5911/10, for $19.97. (Amazon has it for the same price with free Prime shipping.) Choose in-store pickup to avoid the $5.99 shipping fee. That's tied with our mention from last week as the lowest price we've seen. (It's also the best deal we could find today by $5.) It features a contoured brush head, charger base, and 2-minute smart timer.