Delivery & Refund


Since all our products are electronic, your purchase will be available for download in your Digital Book Stream account immediately after purchase.


I. We will give you a refund one of these 2 cases:

a. You receive an error when trying to open the eBook.
b. The eBook you downloaded is not as advertised.

In both cases, please submit a ticket including a screenshot of the error and we will issue you a refund. Please allow us at least 24 hours to reply back to you.

II. We will NOT issue a refund if your situation falls into one of these cases:

a. The page numbers of the eBook differ from those of the hardcopy. It is common knowledge that some types of eBooks (especially EPUB, MOBI, AZW) do not have the same page numbers as the their hardcopy counterparts. Please contact us first about the page numbers before purchasing.

b. You wanted another title but mistook the eBook you bought for that title. We have included in great detail the cover, title, ISBNs, Amazon description of the eBook so there is no way that you can mistake this eBook for another.

c. You purchased the eBook because you thought that this was a physical book. We have made it very clear that our products are electronic and not physical in the description as well as the title of the product.

e. You don’t need the eBook anymore due to unforeseen circumstances (dropping classes, professors changing books, etc.).