Shipping -Only ship to Paypal registered residential or office address-Please provide valid contact number for smooth delivery.-Normally take 7-10 business days to delivered. Return Policy:-Return accept within 14 days only in the condition received wrong book or defected book.-We only refund for the book price if unreasonable return exp class canceled, lecturer change book, wrong book purchased.-Full Refund only will be issued if we wrong sending book.Refund will be done at Paypal while we received returned book in good condition.