I've hired one because I think it sounds like something that is worth a shot. All up it has cost me $80 to hire it and that includes the electrode pads (plus a $40 deposit that I will get back when I return it). I think that's pretty good value considering that I picked up at 36 weeks and don't have to return it until after bubs is born.

If you are interested in using one, I really would advise that you hire one. I've spoken to a few people who have used them and the only ones who found them of value where those who put it on as soon as their contractions started (before they were painful).

You can PM if you want details about where I hired mine.