Pricing mentioned is for a CS. Requires a minimum buy of 1 CS. DY DF8004X1 LEAK DETECTOR 4-1 Gallon CANS; Hazmat=True; Features=Gas leak detector;Non-corrosive and non-flammable; StandardPack=4GA/CS; CountryOfOrigin=US; Height=1 1/2 in; Length=7 in; Width=14 in;