I paid about $49 for our underwater light/fountain show. It was cool the first time we tried it. Then because the water was too cold to swim in, I put it up in the bedroom. Then we had a visit from someone with a boy that had a remote big foot truck, and noticed when walking into the bedroom after he had been playing with the truck all afternoon that the light show was on and reminded me of a UFO sighting. I just chuckled and switched it off placed it on the bed and then forgot about it. A few hours later, some friends and their baby came over and when the diaper change needed to happen I told them to go ahead and use our bedroom. While they were in there, the other boy grabs his remote for his truck and I immediately figured out what probably happened and started laughing. When the couple walked out with their baby, I asked them if they got a light show and they said yes and they baby really enjoyed it once he got over the shock of it turning on all of a sudden.
So needless to say, every so often I would find this darn thing just a lighting up like crazy. The next time we put it in the pool, the light show was great, but the fountain never worked again. I would have to say probably because the pump for it must have burnt out? Moral of the story, is to take batteries out if not using it. Eventually I may still get another though, but not this year!