Cost of the first meal in Wisconsin

So here is what it cost to make the Easy Cheesy Potato Casserole for me shopping at the Wal-Mart Supercenter in Tomah, Wisconsin:
The 2 pounds of frozen potatoes cost $1.88
The Onion was $.88 for a whole one but we only used one so $.44
The Celery was $1.79 for a whole bunch of it but we only used one stalk there were 10 in it so about $.18
The Cream of Celery soup for store brand which is what I used was $.92
The Sour Cream which was cheaper to buy Breakstones of was $1.42
The Butter I got 4 sticks for $2.99 so about $.75
Salt and Pepper we already had on hand
We used the potato chips which were $1.98 for an entire 11 ounce bag, we only used 1 1/2 cups though which ended up being approximately just over 2 ounces which cost $.32
Casserole Grand Total = $5.95
Green Beans were $.76 a can at the commissary
Biscuits were $.99 a can at the commissary
Chicken was leftovers from our New Years get together.
Entire Meal Grand Total = $7.70 to feed an entire family of 5 last night!

Happy Cooking
~Rachelle