as far as materials go lots of us are dumpster divers.... Not legal but if you dont make a mess... no fowl... No pun ....
But I suggest you not get frugal on your wire. As far as paying for feed and stuff. There are very few of us who break even on raising chickens.
To be honest the feeding part should have been thought through before You got chickens... There are ways to be frugal and feed your chickens well...
one hen eats about a quarter pound of feed per day..... (give or take) Thats four ounces. a twenty five pound bag would feed that same hen 100 days. knock off a day or two for wastage or mice. Or alot for other critters getting in.
Past poultry: Buff Brhama, EE, Barred rock, Wellsummer,
Bantam mixes, Araucana, Turkeys, & Guinea Fowl.
Future poultry: Guinea Fowl, Sumatra, Wellsummer, Muscovy
"A dream without a plan is just a wish" Katherine Paterson