4pk Crest Pro-Health Toothpaste $12

This 4-Pack of Crest Pro-Health Advanced Antibacterial Protection Toothpaste in the Mint Burst flavor is on sale for $11.99 at Amazon. The price drop looks small, but this toothpaste is sold in a two-pack at most stores (including Walgreens and Walmart) for $9. This means you'd be paying $18 to buy this quantity elsewhere! Shipping is free with Prime or when you spend $35.