I agree with this in part, it isn't a mature product market yet. However they do produce less heat, so there's a benefit some folks desire. I'd want 8 of the new A51 units for a 4x4, minimum. They do grow bomb smoke, and they are arguably less of a fire hazard than HID. People who need AC for their grow area can benefit, depending on the scale of the operation and existing ventilation blah blah blah they may be able to dispense with the AC unit, which improves cost over time, too. I belief maintenance cost will also be improved. However, I ultimately agree the price just isn't quite there yet for LED to be able to really take over. Hopefully that day will come soon.