Our dogs eat old Roy, but every once in a awhile we have to switch it up as they get bored and don't want to eat it. We pay about $9.00 for a 10 Kilogram bag(approx 20-21 lbs)
I was thinking of switching them to the RAW diet, and a friend of mine (where we got our rescue Aussie Shepperd) makes the BARF Diet and has come up with her own type of dog food and has just started marketing it, I'm looking forward to seeing how much it costs compared to what we pay now. My dogs will also once in awhile get leftovers and they will eat veggies, and my aussie loves bananas.