Walmart offers the refurbished Remington 24-volt 19" 3-in-1 Cordless Battery-Powered Push Lawn Mower for $160 with free shipping. That's $140 under the lowest price we could find for a new one. It features single-level height control and runs up to 75 minutes on a single charge.

Note: A 2-year warranty applies, but it's unclear who backs it.