There is no cost updated in them site, I have submitted billing ticket at support@kontentmachine.com one day back, until I'm not getting any reply. @shaun do you know them package/cost details
I got an email from the developer last week. WAC is shut down and will not be maintained going forward. I think he is selling lists now since I am getting frequent email offers from him. You are better off with KM anyway, much better product.
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But I heard positive things about Kontent Machine.
http://www.autocontentwriter.com