Online Purchase usefull or not

Now days online purchase is very famous all over the world.Yes, is it useful but is depends product.In online purchase we can do huge analysis in both market wise and product wise.In product we should check the same range of products in all brands.In market the price of the item should be compared.To compare products and price many online comparison websites are available.For buying online money transfer, cash on delivery, EMI option are available to pay the money.Cash on delivery is not available for all products.After getting delivery the product should be checked cleanly.If product is satisfied we should comment on website from which we brought.It will be very useful for the other buyers during analysis.If the product is not good or not satisfied,we should immediately contact the website for returning or refund.Before buying online think twice and make happy purchase.