Not worth full price,   marginally worth sale price.   The first set I got,  one of the lights did not respond to the controller.   I was sent a replacement set which worked fine.   However,  the stated range of 16 ft for the controller is false.  Through the air you can get 8 ft but through water only 2 ft so I have to take them out of the hot tub to turn them off.    Also they all leaked water into the battery compartment,  so you have to twist them closed really really tight,  not just firmly,  but really cranked hard to engage the rubber ring.