LightInTheBox offers the Fonoun Inflatable Sofa with Sun Shade in several colors (Blue pictured) for $16.99 with free shipping. That's $20 under the lowest price we could find for a similar item purchased elsewhere. It includes a carry sack.
Note: This item ships from China and may take two to five weeks to arrive. Uncheck "Add Shipping Insurance to your order" during checkout to remove the 49-cent fee.