On Wednesdays I go through all of the grocery store ads and make my shopping list. Most of the time it is obvious which sale price on meat is the best bargain: whole chickens $0.67 a lb., boneless pork loin $0.99 a lb., etc. However, there are times when the decision is not so simple. I used to struggle deciding which was a better deal: $1.69 lb. for boneless, skinless chicken breasts or $1.29 lb. for a whole chicken?
Then I found the Cost Per Serving Calculator at Cheapcooking.com. You enter the type of meat, cut, and price per pound and it gives you the actual cost per serving. In the above case, the chicken breasts are .42 per serving, where the whole chicken is .52 per serving. Of, course, you can't make broth with boneless meat, so if I'm out of broth I might still go ahead and buy the whole chicken.