Amazon: 4 x 180 Count Trident White Sugar-Free Gum (Peppermint) $6.68 or Lower w/ S&S

Not sure if this is a typo but I see 4 x 180 pack of Trident gum (720 pieces total) for $6.68 w/ Free Prime Shipping or $5.68 at 15% S&S
https://www.amazon.com/gp/product…UTF8&psc=1