Nature golden open access fees

I wonder if these estimates can be real:

"1. Estimates of $10,000 – $30,000 in author charges for one OA article? You heard it here first. That’s the entire journals budget for some small libraries. They’d be able to get one article for the year – for all the faculty. I wouldn’t call that a viable OA option."

http://scientopia.org/blogs/bookoftrogool/2010/09/20/nature-the-response/