There are two air purifier coupons available right now:
Now if you need an air purifier this can be a great coupon to grab.
Holmes aer1 Air Purifier $39.99
Use $10 off coupon
Final Price: $29.99
My Target had three different styles of these all at the $39.99 price.
OR Holmes HEPA Type Air Purifier $69.99
Use the $20 off Holmes coupon
Final Price: $49.99
Plus it looks like you get a free backup filter with purchase– you need to enter the UPC info etc… and it looks like the value on that is $24.99.
NOTE: From what I understand there is a $15 Holmes air purifier available at Walmart. That particular unit is not aer1 and the coupon does clearly specify aer1 on it so the $10 coupon is not intended for use on that item.