Update: Phillips.com is having a lot of trouble loading for many and the OCTOBERFREE coupon seems to be no longer working. If this is your first order, you can use the coupon code: FIRSTFREE to get it for the same price for a limited time.
Philips is offering a Philips Sonicare Replacement Toothbrush Head for 1-cent (up to $11.99 value) with Free Shipping when you sign up for their replacement brush head subscription service and use the coupon code: OCTOBERFREE for a limited time. Choose from Diamond Clean (W), Premium Plaque (C3), Optimal Plaque (C2), and Optimal Gum care (G2). Philips Sonicare replacement brush head service sends you a new brush head every 3 months. Future orders will receive 20% off MSRP. There is no obligation and you can cancel anytime. Be sure to cancel 2 days prior to your next payment date if you don’t want to be charged for the cost of a second brush.