I’m wondering the difference between a cheap air purifier like this one: GermGuardian AC4825 3-in-1 Air Purifier with True HEPA Filter, UV-C Sanitizer, Captures Allergens, Smoke, Odors, Mold, Dust, Germs, Pets, Smokers, 22-Inch Germ Guardian Air Purifier: Amazon.ca: Health & Personal Care
and...