Walmart offers the Hamilton Beach Countertop Convection Oven in Black, model no. 31121A, for $49. Choose in-store pickup to dodge the $4.97 shipping fee. That's $4 under our mention from last August and the lowest price we could find now by $20. This extra-large oven includes two cooking racks, an enamel-coated bake pan, and crumb tray.