yes the price is nice however they're only backed by a 12 month warranty. These lights are supposed to last 50,000 plus hours. If they really stood behind their product they'd offer a more substantial warranty. Also they advert as using cree diodes when the nm spectrums they advert do not exist in the cree line up. They advertise the actual chipset capacity of their lights, not the capacity to which the diodes are driven. Any 3w chipset led lamp is only going to be driven to on average 2.1w of actual output per diode. This ensures the lamps longevity. They've also employed some pretty shady business practices with the whole "grow boys" competition. In a nutshell they basically started their own competition between lights and lo and behold their lights won the competition. It was created in a very deceptive manner. Also read this thread before you buy one.
https://www.rollitup.org/grow-room-design-setup/432283-blackstar-240w-led-dissected-upgraded.html
The 240 is actually a 130w lamp. I have seen some good blackstar journals and know some people who've used them with success, however I've said it before and I'll say it again - I consider them to be the walmart of leds.