I would agree with ten bales when calculating cost comparisons, but hopefully you would get more like 12 bales. If my goats are in because its a rainy day, I give them both hay and straw. My pygmies go for the straw first in fact, and it is cheaper. I am lucky enough to be given wheat straw with the wheat still on by a friend who harvests using vintage machinery because he loves to watch all my animals eating their way through it. He has no animals himself but spends time with mine, he's quite mature now but bends down like a 10 year old to tickle a pig. I have adopted him as our family grandad now. My bills have gone up so much, lucky hubby doesn't watch the bank account and I have downsized too. With so much cold weather so early on its going to be an expensive winter.