I would like to offer a chapter of my paperback book (e-book format) and an Excel worksheet to people who have purchased the paperback version of my book. I would like to offer this to them free as bonuses for purchasing the paperback version of the book. These same items may also be for sale on e-junkie. How do I go about verifying that they have actually bought the book and then get them these materials at no extra charge? Can this be done using e-junkie?
Thanks,
Doug
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Apr '10
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Apr '10
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