My friend with 7 in her household spends between $70 to $100 per week on groceries. She does use coupons and buys most things on sale. I have never been frugal but will give it a go which basically means I'd like to go to the grocery store once a week and shop smarter. If I don't go in the store, I won't be tempted to buy nonsense. She and I are going shopping on Monday. I'll report back what I find (or don't).
I haven't decided on Sam's club yet. I belonged last year and never went. Probably the most expensive things I buy are organic meats and tomorrow I am going to Trader Joe's to buy that. The supermarket organic chicken rarely goes on sale unless it's almost out of date and is usually nearly $10 a package. I'll see if TJ's has it cheaper.