I have several roof heat de-icing cables for sale. Each cable w/clips is $30 or BO. The are all used and in good shape; work when plugged in. They are EasyHeat brand and 80' long each. I had these installed on a garage roof. It had 18" overhangs, and using the standard "Z" pattern, one 80' cable covered about 20 linear feet of eve, then the gutter and part of the downspout. These are about $60+ online. I have at least 3 of these, and I think there is a 4th.
email/call/text ok Seven 1 six, 3 three 9, six 0 zero 4 UB North Campus area.