I moved and started gardening this year on my rooftop.
Probably spent $50 total, including water, soil, seeds, etc.
The net result was about a cup of raspberries (-$8 profit) and probably 9-10 small tomatoes.
There's a ton of basil, but I don't use much. Maybe that saved me $2 here or there.
We also got 1 nectarine, but a fly burrowed into it and it rotted.
And, there are a number of tiny carrots that may not be large enough to really eat.
I don't think I'll be planting nearly as much next year.