Walmart offers the Westbend 0.7-Cubic Foot 700-watt Microwave in Blue or Red for $41.82 with free shipping. That's the lowest total price we could find by $40. It includes 11 power levels and six quick-set menu buttons.
At Walmart, search for "551739621" to find the Sunbeam 0.7-Cubic-Foot 700-watt Countertop Microwave, model no. SGYU701, for $49 with free shipping. That's the lowest total price we could find by $18. It features 10 power levels, digital display, child-safe lockout, and six 1-touch settings.