Meijer offers the Intex Prestige Downy Twin Airbed
in Green, model no. 66967E, for $19.99
with free shipping
That's $3 under our mention from over a year ago and the lowest total price we could find by $10, outside the price below. It measures 39" x 75" x 8.75" and features a portable fast-fill pump, wave beam construction, and flocking to prevent sheets from slipping.
A close price: Walmart has it for $20.37 via Site-to-Store pickup; otherwise, shipping adds $1.97.