Yes, I sourced mine from a breeder at about $10 each. But that is only my initial investment and all future generations won't cost me anything assuming I handle my breeding (genetic diversity) correctly. Hatcheries are over charging for non quality birds. Green fire farms sells theirs' for $59 per chick!

And so... seems like if you have the time/energy selling chicks/pullets might be a way to make your money back or cover the cost of the operation. It's one breed that even in my cruddy small town market people will drive 2 hours+ and pay $30 each for pullets all day long. So I can grow out the girls for sale and eat the boys. Black is actually NOT my favorite color bird so I expected to be bored but they still have subtle difference and the beetle green sheen is beautiful. I just happened to fall in love with their personalities (quite rambunctious/aggressive with each other as chicks but confident and laid back as adults) and got the bonus of plenty of broodiness that I know I will never have to raise a chick again should I choose not to. They also show their gender fairly early, 4-6 weeks. So knowing I will not have to buy another heat lamp or pay power bills for them adds savings to the cost factor. And in your location, you might have a HUGE market for selling.
I disagree about Delaware or Dominique being fast growing (could be my strains though). But totally agree that if size is important Cornish X might be your best option for tenderness with layers of your choice.