J.B.
Try www.bargainbeliever.com
She actually breaks down every item in each major grocery store ad every week and provides links to all of the printable coupons as well as what the final price is after coupns etc. It is an amazing site and has helped me save between 50-75% on the final grocery bill every week. We went from spending $100-$150 a week for a family of 4 to now spending approximately $100 every 2 weeks! And we get more food!