Costco Sale: Rove Stainless Steel Insulated Tumbler 2-Pk $12.99 by Rhonda July 16, 2020 *UPDATE* 4/6/17. The double wall vacuum insulation keeps drinks cold longer, with no sweat and no mess. Costco has the Rove Stainless Steel Insulated Tumbler 2-Pack on sale for $12.99 (after… 0 FacebookTwitterPinterestEmail