100% Satisfaction Guarantee

We want all of our customers to be delighted with their shopping experience and their purchases from iSixSigma Publications. If you are not satisfied with your product, return it for a full refund within 15 calendar days from date of paid purchase.

For printed (hard copy) products, just mail them back to us with a Return Certification, which can be downloaded below.

For PDF or other electronic products, please completely delete all product details from your computer's hard drive and destroy any printed copies. Then send by mail, fax or email a Return Certification, which can be downloaded below.

Here is the letter you must use for all returns:
Return Certification (opens in new window)

Here is the return address you *must* use for hard copy delivered products (not electronic):
iSixSigma Publications Returns
321 High School Rd NE
Suite D3 #434
Bainbridge Island, WA 98110