This is pretty comparable (but includes a pm 2.5 meter, auto regulates itself, and has half as many filters). It costs $700: https://www.usa.philips.com/c-m-h

This is pretty comparable (but includes a pm 2.5 meter, auto regulates itself, and has half as many filters). It costs $700: https://www.usa.philips.com/c-m-ho/air-purifier-and-air-humidifier/air-purifier-5000 https://www.usa.philips.com/c-m-ho/air-purifier-and-air-humi...