I'm adding another 8x4 section onto my 8x4 run for my five chickens because 32 square feet is too small for the 5 who spend most the day in there. On my cost estimate, for a simple 2x4 framed run with no roof, the total was about $150 all together, with $100 being the cost of the hardware cloth, about 2/3 of the total project cost. This will only be a day time run, I will keep the original run closed at night which is very secure. Im just wondering though, is the $100 worth it? Or is there an alternative?