NYyote, I was thinking the same? The actual foxpro bags run about $45, I picked one up a bit ago with a gift card..little pricey but I figured it's an expensive item it's carrying so worth the extra money. They fit perfect though, with a little room for more. I carry an extra magazine, tail stripper and about 10 ft of p-cord, my hand calls, and usually a snack or something in my bag.
My buddy just uses a LowePro camera bag and its designed almost exactly the same.