I will go through the math ...
TEN WEEK RUN
12 - 1000 Watt lights produce 35 lbs.
35 lbs sells for $1600/lb or $56,000.
In one year, we will get about 5 turns for a yearly gross income of $280,000.
EIGHT WEEK RUN
12-1000 Watt lights produce 30 lbs.
30 lbs sells for $1600/lb or $48,000.
In one year, we will get six turns for a yearly gross income of $288,000.
That is $8k per year, per room additional income for doing an eight week run.
Since there are no professional growers at this site, at least none that I've talked to (though I suspect Renfrew is a pro) I expect a half dozen peeps tell me how stupid I am, oh, and a liar too.
But, these ARE real numbers.
And, the person buying that bag doesn't give two shits if its ten weeks or eight. She doesn't care if it was fed natural bat crap. She tests for THC content, absence of PM and weight. That's it.
She's a pro.