We've found that buying meat ahead of when you'll need it proves to make for quick and easy meal preparation. We like to buy a large bag of frozen chicken or a 6+lb package of ground beef at Costco to do this. Or, even better, watch for sales on these meats (and others you cook with often), and buy a box of 10 or 20 lbs. It takes some time trimming (if it's chicken), but once it's done, it's done! Simply portion your meat into freezer-safe Ziploc bags (I like to do 1 lb. of beef or 2 chicken breasts per Ziploc), stick them in your freezer, and you're ready to cook your next meal! Then, when you're preparing a meal, you can easily pull out the bag and use it the way you need to. This comes in very hand when preparing a crock-pot dish. It saves so much time!
Right now, most grocery stores (Macey's, Smith's/Kroger, Fresh Market, etc.) are having case lot sales. I know that at Macey's right now, you can get a 40 lb. box of boneless, skinless chicken breasts for $1.49/lb. That is a great price!
So, make your meal prep easier, and buy ahead!