Your question reminded me that I had not downloaded the Reader program from my Sony Reader to my new (two weeks old) computer. So within the last 10 minutes I have connected the Sony and done so, and then downloaded 3 of the books at the Peak site and sync'd them to the reader. The actual download of the books was so quick they 'arrived' as soon as I clicked.
They look OK on the Reader, although they are some kind of archived scan (EPUB), so there are couple of instances of the paragraph not wrapping correctly, and a couple of spare letters now and then. I'm not complaining, the meat and potatoes of the information are there and the computer and Reader are both uncomplaining.