Unless you have repeat buyers, it's gonna be hard to constantly find new people buying chickens. And honestly, if you're in the business of trying to turn a profit...... chicken is probably way down the order, there are many other better investments.
I have to give props when they are due. I've been critical of some of your posts but this is the most intelligent thing you've posted here.
I always say if people don't want their children to do drugs, teach them to raise chickens and they'll never be able to afford drugs.
my electric bill went up 15% when i ran the incubator and brooder. Considering how much it costs to feed hens and a roo I could by chicks cheaper. But it is a good hobby
X2.
Saying there isn't a cost to raising and hatching chickens is very misleading and misguided.
Incubators use a lot of electric, especially if in a cooler space.
There is the cost of building materials, bedding, feed, feeders, water founts, grit, other supplements.
You can save on brooding energy costs with a Premier 1 heat plate but that still requires the initial investment.

I would be careful and make sure your local and state regulation supports you to sell hatched chicks from your home. Not all individuals can do this. My area prohibits any commercial market from chickens from my property so check local and state regulation first. Also depending on where you sell it to, the regulation may change such as in state versus out of state. NPIP certification may be recommended for commercial endeavors regarding poultry. This may include testing flock to verify a clean flock and involve paperwork or permits to ship to another state. Just FYI! That said Good Luck! Also it is recommended to purchase poultry only from NPIP certified breeders and Hatcheries to reduce the incidence of poultry diseases.

I like Meyers Hatchery myself and I did vaccinate for Mareks. If commercial flock then recommended for a whole vaccination schedule that can be obtained from Meyers to prevent spread of poultry diseases such as one we are facing now in California Newcastle Disease and many others.
Where I live, I need a business license (renewed annually) to do this.
I also need to be NPIP to sell both here and across state lines.
The Light Brahma is the worlds largest Chicken. So I thought if I bread a Silkie to a Light Brahma, then back to A Silkie, it would make a bigger Silkie maybe? I have another thread about this.
Here is the link to it
Introducing any breed into the genetics, you no longer have anything remotely silkie. They will just be mutts that no one would pay much for.
In recent years, judges at shows are giving preference to larger silkies but that means they are deviating from the SOP. I have a problem with that.
I don't mean to be commercial, I just doing it as a hobby to make some money.
As a hobby, that is fine.