Walmart offers the Panasonic 1.3-Cubic Foot Countertop Microwave Oven in White for $89.15. Order via pickup to cut the price to $85.85. (Amazon offers it for the same price.) That's the lowest price we could find by $23. This 1,100-watt oven features one-touch sensor cooking, a popcorn key, and a 12.4" turntable.