Walmart offers the Pelonis Electric Oil-Filled Radiator Heater, model no. HO-0250H, for $24. Choose in-store pickup to dodge the $4.97 shipping fee. That's tied with last month's mention and the lowest price we've seen. (It's a current best by $14.) It features three heater settings, safety tip-over switch, adjustable thermostat, auto-shutoff for overheat protection, and heavy-duty caster wheels.