Bought brand new 3 years ago, Line Isolator is basicly still brand new, i plugged it once and used the ground switch once also, it was used as a surge buffer between the board and a quad cortex, which never happened, so if you're searching for new at used price this is the closest you'll get to it.

Please note that if youre in another country, especially the united states, you might have to pay tariffs which i won't assume the responsability.