Amazon offers the Philips Sonicare Kids' Toothbrush Head 2-Pack for $5.85 with free shipping, via the instructions below. That's $2.93 per head and the lowest price we've seen. (It's also about $1 under what you'd pay at your local store after a mail-in rebate.) Each head features protective rubber molding. To get this deal:
  1. View the Philips Sonicare Kids' Toothbrush Head 2-Pack for $11.42
  2. clip the $5 off coupon on the product page
  3. add it to your cart via Subscribe & Save and the price falls to $5.85 at final checkout
Be sure to cancel your subscription once your order ships to avoid being billed for further shipments.