Under-counter microwaves range in price from about $48 to $827, as of 2015. Due to this wide range of prices, most people can find an under-counter microwave that fits within the household budget.
The highest-rated under-counter microwave at Wal-Mart is the Westinghouse 1.1 cubic foot microwave. It has a rating of 5 out of 5 stars, and every reviewer recommends it. Reviewers praise this microwave for being affordable, for working well and for having good options. The more expensive microwaves have not been reviewed on the site or the ratings are lower than other options. The highest-rated microwaves tend to range between $100 and $300.