Intex Pull-out Sofa, Queen Size for $34.64. Shipping is free on orders over $35. If needed, use this Filler Tool to pad the order for free shipping. Here is a screenshot for reference. It has 2 quick inflation and deflation valves, backrest and armrest, and 2 cup holders. Most places have it for about $58.
Originally posted earlier, this post has been revised and is just a friendly reminder.