>>/741991/
I can't see how a whole uncooked chook is cheaper. They're usually about $8 each, and a cooked one is $12. Costco have them cooked for $7.50 and they're Australian Maryland ones. 
I got offered half a cow for $300 and iirc a whole lamb (butchered by a professional and packed) is $220.
I think that was for one of those woolless sheep. 
I would do it but I need to get a chest freezer.