Walmart offers the Philips Sonicare 2 Series Plaque Control Sonic Electric Toothbrush in several colors (Aqua pictured) for $29. This $5 mail-in rebate cuts that to $24. Opt for in-store pickup to avoid the $5.99 shipping charge. (Amazon charges the same via a $5 coupon on the product page.) That's the lowest price we could find by $6, although we saw it for $4 less three weeks ago. It features dynamic cleaning action, up to 31,000 brush strokes per minute, a 2-minute Quadpacer interval timer, and Sonicare charger. Deal ends January 21.