The advantage of buying by installment is that it eases the financial pressure on us when buying something. If we don’t have enough money to make a lump sum payment, we can choose to pay by installments. Second for people who are not good at saving money, I think this is a good way to help them use money in a better way(help them manage their money better). Third we can enjoy the product right away rather than having to wait until we save enough money to buy it outright. In other words, we can get instant satisfaction. The disadvantage of buying by installment is that it will increase our desire sometimes because it is easy to buy things (increase our desire to buy things we really cannot afford). If we don’t consider our ability to pay the installments, that will be a terrible thing as we will lose our credit rating.