The grocery storeI stopped in yesterday for a couple things. Produce was up 50% and looked like it was ready for compost.
One of my grow modules produces 2000 pounds of fresh groceries per year and module only costs 20 thousand cad. Depending on how you value fresh better than organic food, payback is about one year.
One gets to breath in all that oxygen and suck up all that vitamin d producing light while tending the plants.
Nf