Winix C545 4-Stage True HEPA Air Purifier w/ WiFi & PlasmaWave (Refurbished) $70 + Free Shipping Winix has *Winix C545 4-Stage True HEPA Air Purifier w/ WiFi & PlasmaWave Technology* (Refurbished) on sale for *$69.99*. *Shipping is free*. Thanks to Community Member *jojo_whit3* for finding…