I do not see a problem in trying one out. Alibaba probably has good quality units for $60+/-10. You will save a great deal bypassing US companies that market those products here. The only disadvantage I see is use of batteries in them. I will not use one because I do not have a handgun set up for mounting one and at defensible distances with a handgun I do not need one. Defensible means distance short enough to be able to claim self-defense scenario.
