https://www.costco.com/p/-/philips-...oval-whitening-and-gum-care-6-pack/4000200896 Members: 6-Count Philips Sonicare A3 All-in-One Plaque Removal, Whitening & Gum Care Electric Toothbrush Heads (Soft Bristles, Black or White) for $49.99. Shipping is $1.99.