Walmart offers two Ozark Trail 30-oz. Tumblers in Stainless Steel for $7.96. Opt for in-store pickup to avoid the $5.99 shipping fee. That’s a $2 drop from yesterday and the best price we’ve seen. (It’s also $10 under the lowest price we could find for two similar tumblers elsewhere.) They’re BPA-free, double-walled, and vacuum-sealed.