Walmart offers the Ozark Trail 30-oz. Tumbler in Dark Red, Orange Blaze, or Hunter Green for $5. Opt for in-store pickup to avoid the $5.99 shipping fee. That's a buck under our July mention and the lowest price we've seen. (It's a current low in any color by $8. For further comparison, we saw a 2-pack for $9 four days ago.) This BPA-free tumbler is double-walled and vacuum-sealed.