I find free range chicken thigh fillets are cheaper, tastier and better for the chickens! They are usually skinless and you can trim off excess bits of fat if needed. We always buy thigh fillets as breasts are usually so expensive so it helps keep the cost down.
I know some people won't eat halal meat but it is cheaper and I also think it tastes much nicer. We have a few Asian supermarkets near us and all the meat is cheaper, the lamb is also lovely.
we are going to an Asian supermarket today to buy herbs and spices etc, they are so much cheaper than supermarkets where you mainly pay for the little glass jar they come in x