My freezer was a great decision! Since I bought it I have purchased 2 cow shares @ 1/4 cow each, which came out to about 100lbs of meat for just under $300 each time. Including steaks, roasts, liver, hamburger, etc., all of which was natural organic grass fed meat. This stuff at the store is more like $10-20/pound.
I have also been able to store other frozen items. Turkey at the store yesterday was for sale at 1.19/lb for a bird, but around thanksgiving it's a loss leader. I bought two for a fraction of the price, and stored them in the freezer. When I cooked one I was able to split the meat in to 3 containers, one for this week, one for next, one for the week after, and store those.
Two summers ago a friend gave me a 30 gallon trash bag full of bell peppers from their garden (they overplanted...). I ended up having to throw most of them away, but that's a year worth of peppers that I could have frozen if I owned the freezer at that point. Around here people give away apples, plums (oh geeze, so many plums), and squash quite a bit.
Why do we even have small freezers over our fridge? Why do we have a fridge? The economies of scale that make these appliances money savers for us doesn't stop at whatever pre-determined hole in the wall came with your house!