Can be download Immediately after paid

All ebooks are guaranteed to be sent to customers’ email address within 6 hours after paid, usually can download immediately after paid. Customers can email us for urgent order, we will reply ASAP.

If you don’t receive the download link or have trouble when download file, please contact us at our Email address:, we would send you an alternate download link as soon as possible within 6 hours.


This is an electronic/PDF version of the textbook. A physical copy of the textbook will NOT be mailed.Advantages of a PDF file:

Low Cost
Full textbook, no missing pages
Ability to use the keyboard (control+F) to look for certain keywords or answers
Ability to print select pages
Can be put on a USB

Refund Policy

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

First, If you want to cancel your order for any reason, please email us before you receive our download link, we will cancel your order without any question. But after you receive your e-book we only refund you for reasons below:

  • The books are missing contents.
  • If an item is faulty, wrongly described, or different from the sample shown then we will meet our legal obligation which may include refunding the purchase price and delivery charges.
  • Duplicated Orders which are purchased accidentally. We only refund one of them.

Besides these cases, our store does not accept return or refund due to the nature of our products and the price.

The refund money will be funded back to your Bank Account within 3 – 5 business days.

For customer complaint please e-mail us at