100% Money Back Guarantee

Electronic books and electronic calculators are yours to use risk-free to you. If you are not completely satisfied with your improved efficiency after two weeks of use, then simply email me at contact@engproguides.com with a note about your experience. Your request must be received within two months of the original purchase date for a complete refund at your purchase price. No additional charges, no questions asked. Your refund will be provided in the same form of payment that the product was purchased with. No return is required of digital products. Refund policy does not apply to exam courses. See the courses page at engproguides.com/courses.html for the free-retake policy.