Hah, you can tell that break down is old just by the fabric prices. In essence though I think it's spot on.
I know just cost of materials (not taking into consideration the machine wear & tear, electricity, or time) I spend at LEAST $200 to make a 72x72 throw. That's just fabric and batting, I don't even really figure in thread. And that's also shopping sales and using coupons.
I like to quote people $800 for a throw when they ask me if I will make a quilt, but I think I'm going to start tripling it. Maybe quadrupling.