After initial cost of equipment, fencing, etc., then it all gets drastically cheaper from there on out. One has to think about long term and how that expense is spread out over years, plus factor in the cost of organic foods....HUGE expense from the store. Same with the work...initially or occasionally the work is hard, but usually it's just maintenance type stuff, then harvest and canning.
Not to mention the quality and taste of the food....no comparison to anything found in the store. Corn from the store is about as tasteless as little nuggets of cardboard and I never, ever buy a store tomato...it's red and round but that's where the resemblance ends.
Then one gets to factor in the exercise and health benefits from physical labor, exposure to sun and fresh air, and eating the higher quality foods. All of that saves huge expenses when you realize that you are spending less for medical care and medicine than those who live sedentary lives and eat the tainted foods from the grocery store.
The final analysis is that one cannot even calculate the money saved over the long term. What in the world would we be doing if not growing our own foods? Sitting around watching so called reality TV? Might as well shoot me now and spare me the slow and agonizing death of all that.