Shopper Help — Math Mammoth & Comecero

This website (www.mathmammoth.com) contains "Buy now" or "Add to cart" buttons that will take you to a shopping cart page and checkout process provided by Comecero, LLC, my authorized reseller.

This page contains some general information concerning the purchase process with Comecero.

Order fulfillment — digital products: After the order is completed, you will see the download links on the last page of the order process for the digital products you purchased. You will also receive an email with the same download links. These links are valid for 28 or 30 days, and allow for 10 download attempts. If you for some reason cannot download the products within that time frame, please contact us for assistance.

Order fulfillment — CDs: Your CD will be manufactured on-demand, and usually shipped within 2 days of purchase.

Payment methods accepted: credit cards, Amazon Pay .

Problem with the download process or with the PDF or ZIP files: Please read this document.

Refunds policy: If you are not fully satisfied with the item, you may receive a full refund upon explaining the reasons for your refund request.

Returns policy: Downloadable (digital) products are naturally not returnable.

Possible problems

The currency shown in the shopping cart doesn't match the price I saw on the website.

Typically this happens if you live somewhere else than the United States, yet your currency is called "dollar" (Canada, Australia). The prices on MathMammoth.com website are shown in USD. The cart software converts the prices to your local currency.

You can change the currency from the right top part of the cart page: