Estimating a cost for the product is very essential because an accurate determination is needed. If the cost of the product is under estimated then the company might face the losses. Over estimation of product cost leads to get bad name from the people. The price should be compared with the competing organism is must. The price comparison is the service, which is, introduces in the 1990s. In 1990s Internet is reached loop and corner of the world. The price should be compared with the help of Internet. The price compare is the healthy thing for the customer. Customer needs to know the worth of the product by seeing their characteristics. All the companies having their own websites and they feed some information about their products and features of the company in the websites. It helps the people to choose the right product. The reason for sudden increase in the productivity of company is due to availability of online shopping. Through online people book their product and pay their money via Internet. Mostly the customer uses the credit cards for paying the money through Internet. Many websites are functioning to compare the prices of the products. They should update the price daily if it is a fluctuating price.