Hi Kelvin, Regarding discount there is a procedure which is followed strictly by courseworktutors. Once you place an order with courseworktutors, you are eligible for 20% discount on your next order. What you need to do is just request customer service team to give you an unique code after placing 1st order. That unique code has unlimited validity and whenever you place a next order, you just need to inform customer service team the unique code and they will give you flat 20% off. You can also share that code with your friend. One code can be used for only one time.