I think $849 for the HLG-600 is a reasonable price for the quality of the light output/distribution, components, quantum board benefits*, lack of heat (and wasted energy), and end results is more than justified for anyone with experience and the demand for the output this light can produce.
For anyone just getting started, it is probably going to be shocking, but then again, how much does a serious weed smoker spend every month? When you add it all up, the investment is worth the cost and will pay for itself in no time.
I could buy an old school HID light drawing 1000 watts at the wall for $400 but then I have to vent all the heat and pay for the electricity wasted to produce this heat. That makes no sense to me, so even though this option is the least up front cost, it is the least attractive option overall.
I could buy the Black Dog LED PhytoMAX-2 600, for a whopping $1,549!!!
That to me is shocking. Why so much?
The web site says:
At 630 actual watts and 961 μMol/s total photon flux, the patent-pending PhytoMAX-2 600 LED lights for growing will outperform any single-ended 1000W HPS light.
So now I compare that to the HLG-600, the light I use and recommend.
The specs for this light are:
60-600 watts (dimmable), Total PPF (μmol/s): 1521.98
Comparing the two lights, the HLG light uses 30 watts less light but outputs far more usable light, 1,521 PPF vs. 961 PPF.
If you compare the PPFD light intensity distribution across the tent, the HLG light outputs at least as much if not more usable light over the tent footprint. This is difficult to confirm, since Black Dog will only publish average PPFD while HLG will publish the lab results for the 4x4 grid.
This is important because one of the benefits of the quantum boards is they spread out the LED lights over a larger area than the Black Dog light, so that means more growth over the entire footprint of the tent, instead of more growth in the middle and less on the perimeter.
If you compare the light spectrum, the HLG light is a full spectrum light while the Black Dog is an expensive blur pie light. This is confirmed by a comparison of the two light wavelength tests.
First we have Black Dog:
Then we have HLG:
Now last but not least, we have a $135 KingPlus blur pie LED from Amazon, and we have a very similar light spectrum output to the Black Dog above:
As you can see, the Black Dog and KingPlus lights both call themselves "full spectrum" but they are not - only the HLG light has full spectrum output intensity in yellow and orange, the other two are almost identical. So how can they all be "full spectrum"?
Well, the Black Dog and Amazon lights are both putting out some light in all the wavelengths, so technically they are "full spectrum" lights. They claim to be optimized for plant growth but no one believes that about the cheap blur pie lights on Amazon.
Now the real question, why does the Black Dog cost twice as much as the HLG light?
Or better yet, why does Black Dog sell anything at all?
And if you can buy a state of the art quantum board for half as much, why buy a Black Dog light that needs 5 fans to keep cool, all wasted electricity, and no dimmer?
Despite all this evidence, a friend of mine just convinced himself to buy the Black Dog LED. I am scratching my head.
Bottom line is, in my opinion the quantum boards from HLG are well worth the money. I would compare them to all other options.