Air Purifiers allow you to enjoy fresh and clean air at home. It`s a must-have home appliance for people who struggle with asthma, allergies, or other respiratory disorders. So if you like to enjoy the benefits mentioned above, and looking for the best air purifier priced under $100, the list below will simplify your search. 1. GermGuardian AC4825 (under $80) GermGuardian AC4825 is perfect