aovantages and disadvantges of purchasing online

nowadays,people like to shopping by internet,because firstly,it is very convenience,you can by anything by a click.secondly,you can buy anything you like from everywhere through the internet,because the internet links every place of the world.
However,coins have two sides.you can not see the real product through internet,so sometimes the poducts from the intenet may be different from your image,and this always make me feel disappointment.

谢谢~