My advice would be to call your local stores and ask to talk with someone in the meat depts and ask them how much the whole chickens are.
If they do not have a meat dept. someone would be able to tell you rhe price- will save you time and gas.
I get 2 whole chicken in a pacakge(each wrapped in seperate packages of course)and they run 6-8 dollars and that is over 10 pounds for both whole chickens.That is so much cheaper than the grocery store.Maybe Costco might have the same thing as Sam's if you have that?
I don't know what stores you have around you? My Rainbow(owned by Roundy's) has whole chickens for $0.88/lb. limit is 2, so more than one trip may be in order or bring a friend and have them buy 2 for you.