Is this the seller?
http://www.aliexpress.com/item/Plant-Grow-Light-Induction-lamp-500W-largest-Power-1052MM-with-More-Red-spectrum-or-Blue-Spectrum/1445313589.html
I saw that yesterday and thought it would be a gamble, unless they happen to be the supplier for a reputable EFDL brand. I have no idea. I would ask for a sample, one veg and one bloom. Notice the ballasts are 220V, which should be preferable for a commercial grow.
Most of your competitors will be using the industry standard, tried and tested, 1,000 watt HPS. My $0.02 says, before you make a substantial investment, buy one EFDL light and see if you like it. Get an Inda Gro, or those samples from China and build your own, before going all in on the induction thing.
If 100% of people who tried EFDL swore by it, that would be one thing. However, not everyone has been satisfied with EFDL for flowering. I'd also consider the new Apache 600 watt LED panels, if I were doing a commercial grow. Ceramic Metal Halide is another option, but not a wise investment if they're being phased out of production.
I'm not trying to steer you away from EFDL, I'm planning to try one myself. I'm not a business though, I can afford to stick a $600 light in a bedroom and see what happens. You however, must weigh business decisions carefully. Definitely don't send 11 grand to China.