Orders may be paid upon receipt.

    Prices do not include shipping. For hard-copy orders below €50,- outside the Netherlands €9,- shipping costs will be added. If you order more shipping is free. If you want to order more than 10 books please contact us for a discount.

    English books

    Fighting Negativity €20,00
    The Enthusiasm Trilogy €29,00
    The Superpromoter - Hard-copy € 0,00

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    German-language books

    Der Superpromoter (German, Deutsch) Paperback €20,00

    Dutch books

    Negativiteit mania - De waan van het negativiteitsdenken - Paperback
    Negativiteit mania - De waan van het negativiteitsdenken - E-Book
    €20,00
    €15,99


    De Enthousiasme Trilogie, Flame, Flow, Flood - Hardcopy
    De Enthousiasme Trilogie, Flame, Flow, Flood - E-Book
    €29,00
    €20,00


    De Superpromoter; herziene versie (2016) - Paperback
    De Superpromoter; herziene versie (2016) - E-Book
    €20,00
    €15,99


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