JCPenney offers the Sealy Baby Ultra Classic Crib Mattress in White for $110. Coupon code "4THEBABY" cuts it to $93.50. With free shipping, that's $17 off list and the lowest total price we could find. It measures 52" x 27.5" x 5.75" and features a heat-tempered 150 innerspring coil system, non-allergenic top, heavy-gauge steel border rods, and reinforced laminate cover. Deal ends March 12.