Home Slickdeals Gloveworks Heavy Duty Nitrile Gloves, 300-count + Nitrile Gloves, 100-count $20. ... Slickdeals Gloveworks Heavy Duty Nitrile Gloves, 300-count + Nitrile Gloves, 100-count $20. Reg $28. Free shipping from Costco. By ARCOM - 7 March 2018 172 0 SHARE Facebook Twitter Go to the deal page: Gloveworks Heavy Duty Nitrile Gloves, 300-count + Nitrile Gloves, 100-count $20. Reg $28. Free shipping from Costco.