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Costco Wholesale has Winix C710 4-Stage WiFi True HEPA Air Purifier w/ Additional Air Filter ( 4449587) on sale for $99.99 valid for Costco Members only. Shipping is $4.99 or available for in-warehouse purchase (if stock permits)

Thanks to community member allen999999 for finding this deal

Note, must login to your Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)