For books you are only charged based on the book cost, during packing we check the prices of books against your invoice and if we notice any pricing mismatch we will co-ordinate with you to send extra money or other books.
Only extra cost you pay is for the Shipping and Handling, which will be when you purchase orders below INR 500 and refer to Delivery FAQ for the delivery charges below INR 500.
Posted in: Payments