Amazon Whispersync (22,220 titles) -- after purchase of Kindle book
The Free Classics decreased from 10 to 6 and the $0.99 Classics increased from 44 to 108. That's a huge jump for the $0.99 Classics. I doubt they've added that many. It's more like they were always there, but never listed with the others. In the past, I've found titles that should belong to the above groups, but weren't listed. For example; "The Wizard of Oz" is not listed in the Free Classics, yet it's still free.