You say your grocery budget is $50. Is that just for food groceries or does that include paper products, toiletries, and personal items like make-up too?
That is a great question and one you need to consider for yourself, too, when you sit down to make your grocery budget. My $50 covers all my regular shopping needs. I regularly purchase food of course. I also regularly purchase toilet paper, toothpaste, shampoo, soap, dish detergent, laundry soap, deodorant and the like. These things are included in my grocery budget.
Occassionally I need to get more hair gel, razor refills, plastic wrap, batteries, make-up, or any other number of items that are purchased infrequently. These I generally do not consider in my grocery budget. However, when they are on sale at Albertsons with coupons they get thrown in under the grocery umbrella.
Hope that helps.