Walmart offers the Ozark Trail 12-oz. Vacuum-Insulated Stainless Steel Can Cooler for $4.20 $3.88. Opt for in-store pickup to avoid the $5.99 shipping fee. That's tied with our mention from a week ago, a low by $6, and the best price we've seen. This BPA-free cooler is double-walled and vacuum-sealed and features a metal screw-on gasket.