I had considered Amazon's multiple listings of public domain books earlier in this thread. I think I concluded that although they may sell dozens of different versions of Moby Dick, there just aren't that many public domain titles in their list. Maybe a thousand or two. If you exclude those, then how many of the remaining 110,000 plus titles can be duplicates? I don't think very many.
Both Sony and Amazon are putting in fair efforts to add new titles (110 and 183 per day, respectively) but it's clear Amazon's numbers are just larger. Still, who knows if they are books that any of us want to read?
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