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Re:$15,000 In Income From An EBook, How I Did It by jbigelow76 on Wednesday September 19, 2012 @11:56AM (#4544095)
Good points but don't forget that he probably also increased his expertise in Ruby which itself drives value in his consulting work.
Re:$15,000 In Income From An EBook, How I Did It by tomjen3 on Wednesday September 19, 2012 @02:02PM (#4544685)
Not necessarily.

But it certainly increased his percieved value.