the clip that holds the sensor to the underwear pops off really easy. Besides that I can’t imagen the 300 dollar ...
I was very impressed how well it works. The first night my son slept right though it beeping.  Soon he was getting up with it beeping then all of sudden was sleeping throughout the night without wetting.  A down side to it, the clip that holds the sensor to the underwear pops off really easy.  Besides that I can’t imagen the 300 dollar one working much better. Even comes with replacement batterys.
Rating: 3 stars