Home Slickdeals KIll A Watt P3 P4400 Electricity Usage Monitor – $16.67 and FS... Slickdeals KIll A Watt P3 P4400 Electricity Usage Monitor – $16.67 and FS with Prime By ARCOM - 6 February 2018 227 0 SHARE Facebook Twitter Go to the deal page: KIll A Watt P3 P4400 Electricity Usage Monitor – $16.67 and FS with Prime