Home Slickdeals Winix True HEPA 4 Stage Air Purifier $100. Reg $130. ... Slickdeals Winix True HEPA 4 Stage Air Purifier $100. Reg $130. $5 shipping from Costco. By ARCOM - 25 December 2023 35 0 SHARE Facebook Twitter Go to the deal page: Winix True HEPA 4 Stage Air Purifier $100. Reg $130. $5 shipping from Costco.