Sonicare Brush Heads – Costco Sale! by Rhonda April 4, 2023 9/10/18. © Frugal Hotspot *SALE UPDATE* 4/4/23. The Sonicare Brush Heads from Costco now come in an 8-pack instead of a 6-pack. These brush heads work with the Philips Sonicare click-on… 0 FacebookTwitterPinterestEmail