The Black Friday shopping bonanza may still be a month away, but you might want to reconsider holding off on big purchases. In the anticipation of huge discounts, don't miss this fantastic early Black Friday deal; the smartmi HEPA air purifier is now 50% off on Amazon (opens in new tab), saving you a massive $110. The smartmi HEPA air purifier is truly one of a kind. If you are struggling with allergies, lingering odors, pollen or dust, this clever device can make a huge difference to the air quality in your home. Unlike many other similar devices, it is...