Target offers the Eco-Lux Arch Support Double Platform Bed Frame in Silver for $159.99. In-cart, it falls to $127.99. Coupon code "HOME10" further drops it to $117.99. With free shipping that's $21 under our April mention and the lowest total price we could find. It measures 14" x 38" x 74" and is made of steel.
Of note, it's also available in King or California King for $159.99 via the above coupon. An oversized shipping fee of $30 applies for these sizes.