Katula's offers this Intex Inflatable Pull-Out Chair for $24.99 with free shipping. That's the lowest total price we could find by $2, although we saw it for $2 less in September. The chair converts into a twin mattress and measures 42" x 42" x 26".
Note: This item is on backorder and will ship when available.
VM Innovations via eBay offers the Intex Deluxe Pillow Rest Queen Air Bed, model no. 67737E, for $36.99 with free shipping. That's the lowest total price we could find by $7. It features a built in electric pump, waterproof-flocked top and sides, and a 3-minute inflate time.