Home Depot offers the Cadet EnergyPlus 1,600-Watt 120/240-Volt In-Wall Electric Wall Heater in White for the in-cart price of $178.20 with free shipping. (Amazon charges the same, although it's currently on backorder.) That's the lowest price we could find by $20. It features auto-adjusting voltage, a digital thermostat, night or away button, and thermal safeguard protection.