We provide sample for each book in our book store. We recommend you to read sample of the book in order to decide whether you like book or not before puchasing it.

If you are however not 100% satisfied with your purchase, you have to contact directly retailer online store which fulfilled your purchase.

In case purchase was done directly from our website you can write to us via Contact Form within 30 min after puchase and we will provide you with full refund.