Amazon offers the Intex Inflatable Queen Pull-Out Sofa Bed in Black for $35.89 with free shipping. (Walmart and VM Innovations via eBay charge the same.) That's a buck under our mention from three weeks ago and the lowest price we've seen. (It's a low now by $10.) It measures 76" x 87" x 26" and features extra-wide valve openings and a flocked top, sides, and bottom.

Update: The price has dropped to $35.09.