All the content is emailed instantly in your inbox so all our customers are happy and satisfied with the purchased product.

If something isn’t right we are happy to accept a return subject to the Return and Exchange Policy below:

Applicable Refund

Occasionally, an extreme case of human error or a technical failure on our part shall be handled carefully by dedicated customer support and amicably resolved based on a case to case basis. If an item is faulty, wrongly described, or different from the sample shown then we will meet our legal obligation on a case by case basis. Time frame of refunding is 3-10 business days after the error is reported, confirmed and no satisfactory fix is implemented.

In case you have duplicate or multiple orders of the same item, please email us all related Order ID(s). We will verify and guarantee to process refunding the extra Order(s) for you. Time frame of refunding is 3-10 business days

Non-Applicable Refund

We strive to achieve zero order mistake through an accurate and foolproof system of verification and purchase as follows: product page, cart page, and checkout page. We have sufficient check points to ensure that the product is verified from all possible detailed characteristics before buying. All our products are digital downloads and hence not physical returnable. Dropping a class or any order mistake from user is also not applicable. Descriptions are all clear so that any misunderstanding with physical goods will not be entertained.

Access Codes which are used for grading homeworks, quizzes and exams are very expensive and are not included with any item. Therefore, a refund reason of “No Access Code” is not applicable. Access codes should be purchased separately. Most of the time, it is cheaper to buy the PDF and the access code separately.

Every item has been download-tested carefully before listed. In the case that your book does not download properly due to slow internet connection or technical issue with device we will assist you in downloading the book. Therefore, a refund reason of “Cannot Download” or “Bought From Another Seller” is not applicable.

For any clarification or download assistance, please contact us.


If you have any issues with the instant download of your textbook order, first please change your web browser settings to accept pop up windows, if still having issues please contact us for a solution.