4 dogs, 3 large and 1 medium about $50 a week with ProPlan kibbles and chicken marylands. This excludes the more exorbidant treats (smoke beef, chick flanks) which can cost up to $20 a week.
My choice would be ProPlan Performance. My fussiest dogs found palatability in it and has great coats and build derived from a ProPlan diet + fresh chicken.