Use 2 printable coupons (buy 2, get 1 free) and 3 Checkout 51 cash back offers for this deals:
Nabisco Ritz Crackers 12.9 oz. Sale price $2.50
Buy 6 boxes = $15
Use 30% Cartwheel offer (expires 7/4)= Less $4.50
Use 2 printable coupons = Less $5
Pay $5.50 at the register
Use 3 Checkout 51 Cash Back offers = $7.50 cash back
Net cost: 6 boxes FREE + $2 profit!