Walmart offers the Dorel Twin-Over-Full Bunk Bed in Black, Silver, or White, model no. 3136196, for $149 with free shipping. (Amazon offers it for the same price.) That's $1 under our August mention and the lowest total price we've seen. (It's a current price low by $29.) This 57" x 78" x 61" bunk bed features a metal frame, secured ladder, and safety rails.