Looking back through my chicken binder this week (where I keep my old feed records, chick purchase receipts, etc.) I found a note where I priced out the three different kinds of chicken tractors I've made. I thought this might be useful for anyone thinking about building their own this year.
The smallest, of course, is the cheapest. My 4x8 tractors cost me $44.50 each - $1.50 each for ten 2x2s ($10.50), 50 cents each for 8 corner braces ($4), 25 feet of 1" wire ($30), and $5 for a tarp.
The 8x8s were $72.50 each - $1.50 each for 11 2x2s, 50 cents each for 8 corner braces, $42 for 32 feet of 1" wire fencing, and $10 for a tarp.
The 10x10 PVC pens cost me $124.50 - 10 pieces of 10-foot PVC at $3.47 each ($34.70), 10 elbows at $1.55 each ($15.50), 2 cross connections at $2.15 each ($4.30), 40 feet of 1"wire fencing ($60), and $10 for a tarp.
Obviously, prices change, and you can certainly build these with used materials, but hopefully this will give you an idea of how much it might cost to build each of these pens.