Thumb Score: +23

Amazon [amazon.com] has 4″ Chew King Supreme Durable Rubber Dog Ball for $4.20. Shipping is free w/ Prime or on $35+.

Walmart [walmart.com] has 4″ Chew King Supreme Durable Rubber Dog Ball for $4.20. Shipping is free w/ Walmart+ (free trial available [walmart.com]) or on orders $35+.

Product Description from Amazon: