Walmart offers the Storkcraft Hampton 2-in-1 Fixed-Side Convertible Crib in Espresso, model no. 04520-319, for $99 with free shipping. (Amazon has it for the same.) That's the lowest total price we could find by $51, outside of the mentions below. It converts into a daybed and features three adjustable mattress positions.

Close Prices: Jet.com and Hayneedle have it for $102.63 with free shipping.