Tough question. I guess this is one of those inherent difficulties in choosing to go primal. My wife and I are both teachers, hence, funds are limited and we are paid only once a month. It certainly is difficult to adjust financially to the primal lifestyle.
I have found that while on the front end, the grocery bill seems high, that the returns are significant. We seem to eat far less frequently than we did before and the meats are much more satisfying. When I discovered MDA, I was also reading "Omnivore's Dilemma" by Michael Pollan. One of his tenets is to "pay more, eat less". We've found that this concept gels very well with the primal lifestyle. We choose to foot the bill, so to speak, so that we will earn the benefits in the long run (ie. having not eaten meats that are heavily laden with toxic substances).
What area of the country are you located in? I have a URL that might help you locate some locally raised, pastured meats.