10-Count GUM Summit Toothbrushes $6.97 at Costco $6.97 $20 Costco members only. Costco has the 10-Count GUM Summit Toothbrushes (Soft Ultra-tapered Bristles) for $6.97 with free shipping. Designed to remove 5X the plaque. $6.97 retail: $20 Posted by VanGogh08/16/2024 at 07:30 PM PT