Costco – H2O Go! River Tube 2-Pk $24.99 by Rhonda July 16, 2020 *UPDATE* 4/21/20. Enjoy inner tubing? Select Costco locations have the H2O Go! River Sport Tube 2-Pack back in stores for a very limited time. It’s priced at $24.99. While supplies… 0 FacebookTwitterPinterestEmail