Gliders and glider equipment must be purchased by an USHPA rated pilot. Failure to do so will result in the order being returned. We have the right to refuse any purchase or product at anytime, whether this is expressly stated to you or not. For gliders and equipment, it is recommended to ask details regarding the product before you purchase. If you make a purchase with us, we have the right to refuse or cancel your purchase through any means necessary and for any reason and this reason does not have to be expressly stated to you.