$200 is the 30% average that most Americans waste each month, and you decide to stop throwing away the food that you buy–which means your spending drops by this amount.
$50 is the value of the “free” food you harvested from your garden or someone else’s.
$50 is the amount saved by the times you used self-control and walked away from a price that was just too high at the store.
Yes, these changes require doing a lot of things differently. BUT, it’s possible. And, $200 a month is not the “holy” number for grocery budgets. You can spend $700 or more and still be just fine–unless you do not have that money to spend…or unless God is calling you to do something different.