Amazon offers the Oral-B Power Sensitive Extra Soft Replacement Electric Toothbrush Head 3-Pack, model no. EB17-3 ES, for $12.19 with free shipping via the steps below. That's $2 under our March mention and the lowest total price we've seen. (It's the best now by $2.) It's compatible with all Oral-B rechargeable handles, except for Oral-B Sonic toothbrushes. To get this deal:
  1. View the Oral-B Power Sensitive Extra Soft Replacement Electric Toothbrush Head 3-Pack for $15.99
  2. clip the $3 off coupon on the product page
  3. order via Subscribe & Save for a final price of $12.19
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.