Costco Members: Winix C909 4-Stage Air Purifier $159.99 + $5 S/H $164.99

Costco has their regular sale of the Winix C909 for $164.99.
The C545 (360 Sq Ft.) is also for sale, but this C909 covers a larger sq footage with "AHAM Verified up to 500 Sq. Ft. Room Coverage".
https://www.costco.com/winix-c909…42491.html