Commerce fundamentally is the trade of products or service. In todays age, this is not only done by one going physically into a store - it can be done all through the internet! This means that people are able to browse lists of products online, and make a purchase to recieve the chosen item(s) in the post fairly shortly. Conversely, one is also able to sell their own personal goods and services to the general public through solely the internet - in fact, today, many businesses run on the internet only! However, this does not mean that only businesses can sell things online - anybody can! Barterers can also auction certain items.