Yeah I am totally on the Budget just like anyone else, Slow is Smooth and Smooth is Fast. But I make a point to purchase bulk so instead of going to China-Mart and get the crummy 20lbs of rice, I go to the LDS in Dallas and pick up what my budget allocates for the month to feed my family. But anyway you can get it you most defiantly should.
Now also keep in mind that meat is not going to be our primary intake of protein, so to supplement the loss of the available meat we can produce we use peanut butter and other various nuts. Like i said before if you eat what you store and store what you eat then your body will not go through the shock that most will suffer when they switch to emergency stash.
When I started I spent like 50 something dollars on canned goods. Made a list of what we already had, made a few notes on what we needed and what we did not necessarily "Need". I came home with good deal of food which all had a minimal shelf life of 2 years. Throw in a few 50lbs of Rice, Wheat, an Beans and you have a really good start, then build from there.