Yes, the freezer and pantry are the biggest moneysavers in the food budget universe!
If you have space to store stuff, you can really take advantage of sales. I never pay full price for meat. When it goes on a nice sale, I stock up and put it in the freezer. It's wonderful.
The one appliance I will insist on when we have the room is an extra freezer.
My parents had an old upright freezer in the garage, and that thing was ALWAYS full of meat.
This stupid side-by-side we have now has enough room in the freezer for one half-gallon of ice cream, 10 of those zero-calorie Italian ices in the tube, and two bags of unidentified vegetables Xena's Guy brought home from some family dinner. Nothing else may enter.