Chickens aren’t expensive relatively speaking but I do try to keep an eye on feed intake and feed outtake (poop) to stay balanced.
I cook for five large dogs everyday so every other critter here gets a convenience food from a sack. For my chickens that means Purina Flock Raiser and Layena. I buy from a local feed store that picks up from the local Purina feed mill. It doesn’t save me but I never have to worry about stale food or insect infestations. They absolutely love their food and even though they free range on rotation, they don’t seem to get much or they simply prefer their feed over the morsels they encounter during the day. We’ve had more hawks and way more wild birds than usual lately so I’ve restricted the free ranging and it doesn’t make any difference in their feed intake.