Philips Sonicare HX6013/90 ProResults Brush Heads (3-Pack) for $18.60 shipped after selecting Subscribe & Save to take an additional 15% off. Here is a screenshot for your reference. You can cancel S&S easily with a few clicks after your order ships. The toothbrush head features wider sweeping motion than Sonicare Elite and push on connector that makes ProResults easy to clean. Most places have it for about $29.