Best Buy offers the Pure Guardian 1.3-Gallon Ultrasonic Humidifier, model no. H7550, for $109.99 with free shipping. (This price will show at check-out. Amazon has it for the same price.) That's the lowest total price we could find by $10. It features a 250-sq. ft. humidifying capacity, night light, fungal and mold treatment in water tank, and Ultrasonic technology.
EliteComputer via Amazon offers the Homeleader Glass Panel Convector Heater, model no. GH-15A, for $49.99 with free shipping. That's the lowest total price we could find by $50. This 1,200-watt heater features an adjustable thermostat and can either be freestanding or mounted on a wall.
Walmart offers the Hoover Tempo Widepath Bagged Upright Vacuum, model no. U5140900, for $79.99 with free shipping. (Amazon offers it for the same price, as does Hoover via eBay.) That's the lowest total price we could find by $17. It features allergen filtration, five height settings, 12-amp motor, two extension wands, crevice tool, and upholstery tool.
Amazon offers the Mavea Maxtra Water Filter 3-Pack for $12.49. Order via Subscribe & Save to cut the price to $10.62. With free shipping, that's the lowest total price we could find by $11. These filters don't require pre-soaking and include a micro-screen to reduce carbon particles.
Be sure to cancel Subscribe & Save after your order arrives or you'll be billed for subsequent shipments.
Target offers the Vicks Vaporizer with Night-Light for $12.99. Opt for in-store pickup to avoid the $6.47 shipping charge. (Amazon offers it for the same price.) That's the lowest total price we could find by $7. This 1.5-gallon vaporizer features an automatic shut-off, built-in night-light, and 18 to 24 hour run time.
Amazon offers the iRobot Roomba 780 Vacuum Cleaning Robot for Pets and Allergies, model no. 78002, for for an in-cart price of $549.99 with free shipping. That's tied with our mention from three weeks ago and the lowest total price we could find by $30. It features dual HEPA filters, infrared remote, and up to seven scheduled cleaning sessions per week.
Amazon offers the iRobot Roomba 770 Bagless Vacuum Cleaning Robot, model no. 77002, for an in-cart price of $399.99 with free shipping. That's tied with our November mention and the lowest total price we could find by $99. Features include dual HEPA Air Filters, infrared remote, full bin indicator, and on-board scheduling.