Amazon has a 2-pack of air purifiers available for $59.99; that's just $30 apiece.
I came across this air purifier 2-pack on sale for $79.99 on Amazon. You'll pay only $59.99 at checkout after you clip the $20 coupon on the product page. That's like getting each air purifier for $30.
Take a look at all of the hottest Amazon deals available right now.