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He probably downloaded a e-book from another seller on the internet. If so, that can have reasons.
(e.g. (if free e-book) Ha didn't have any spare money, and couldn't wait to learn some magic/mentalism, but would support the creator later/in another way.
(If not free e-book) Got a offer from a guy on the internet that could scan the book and send it as a e-book, and he accepted, etc.) Maybe he just miss-typed?
Kind Regards
- AndreasG