Mikel, we've had the bed jet For 7 or 8 years now. Not one issue with it in all that time. We got a newer version a couple years later for the other side of the bed and no problems with it either.
As my wife tells her younger friends who are starting menopause " it is a luxury item, but it was worth every penny,and probably saved our marriage ".
The price has come down considerably since we bought ours, if you can swing it for your mom I think she will be tickled.