Collard 'Georgia Creole ' planted spring 2020. Of 6 or 8, three survived and this is the biggest . Maybe I'll let it keep going.. depends.
Five feet at top.
I have loads of mustard, arugula and these collard in bloom but never see pollinators interested.
I'm trying to let them go for seed.
If you value your labor at even minimum wage, garden work isn't cheap food. Then theres the processing , washing, cutting etc.. You have to do the work for other Intrinsic value.
Tomatoes, fresh, are a good value compared to store cost and quality.