Walmart offers the Ozark Trail 12-oz. Vacuum-Insulated Stainless Steel Can Cooler in Black for $5.24. Opt for in-store pickup to avoid the $5.99 shipping fee. That's essentially tied with our August mention, the best deal now by $6, and the lowest price we've seen. This BPA-free cooler is double-walled and vacuum-sealed; it features a metal screw-on gasket.