
I actually buy my ground beef and chicken at Whole Foods because it is the cheapest for what we need! We were buying organic ground beef and organic chicken breast at Costco, but the ground beef went up to $4.75/lb and the chicken is $6/lb. At Whole Foods I can get antibiotic free ground beef for $4/lb [when you buy 3+ lbs] and antibiotic-free chicken breast for $5. It's not organic, but the ground beef is ground in-store and tastes so much better than the packed mush that Costco sells, and the chicken tastes comparable.
FWIW, the Whole Foods prices beat the Kroger prices for conventional ground beef and chicken, unless they have a sale (which doesn't matter to me even if they were giving it away for free as I won't buy conventional meat at all anymore.)