RETURNS POLICY: Should you find that our product is defective in some way, please notify us within 24 hours of receiving it and we will arrange to pick it up and ship you a replacement. You are required to make a video recording on your phone of the defect and to send to admin@supermaths.net within the 24 hour period after receipt. Turbo series publications may be viewed online on youtube before purchase therefore we do not accept returns that are non-defective.