PetSmart offers the KONG Comfort Dog Collar in four colors for $4.99 It drops to $4.49 when you opt for in-store pickup to dodge the $6.49 shipping fee. That's a $3 under the best shipped price we could find. They're available in a variety of lengths 8" to 18", although not in all size/color combinations. Also available is the the KONG Reflective Dog Collar in four colors for $4.99 It also drops to $4.49 when you opt for in-store pickup to dodge the $6.49 shipping fee.