Walmart offers the Intex Mossy Oak Twin Prestige Downy Airbed Mattress for $15.97. Opt for in-store pickup to avoid the $49.97 shipping fee. That's $14 off list and the lowest price we could find, although we saw it for $4 less in September. It features a flocked top and 3-in-1 valve with extra-wide openings.

Update: The price has dropped to $14.