The compromises are cost, yield, space, and they can be prioritized in a number of ways.
My costs including ferts on a 15gal pot are about $15. And for that money, I'm pretty sure I can average 25lbs of tomatoes per plant or 60 cents a pound.
I believe I could lower my costs, but I also think efficiency would suffer. So say I lower my costs to $5 a pot and my production is now 15lbs or 33 cents a pound.
I have lowered my cost of tomatoes, but I have fewer pounds in the same amount of space using approximately as much fertilizer.
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