An impromptu business can be started with the use of sheer wits and study. No need for cash investments (other than perhaps the computer and the Internet Service Provider), are needed and just to study the whole process, using the web as the medium of business will indeed some small to large sums of profit, given the proper way of negotiations and presentation.
Such has been the practice by people all over the world who look towards auctions sites such as E-bay and Amazon. Offering slightly used items, or even hard to find antiques that are priced more expensive than their original value allows people to earn money simply by posting and offering it to bidders who look for rare items that are no longer available in the market today.
Another factor to consider is the exchange rate. Ideally, for every county, this varies, depending on the effect of the currency towards other countries such as the dollar to peso, dollar to pounds or dollar to yen conversion factors. These play a vital role and the value after conversion would usually return more than the original price it was pegged. Not a bad practice for people who want to start a small business that can eventually balloon to a good extra income endeavor.
Here are some other Auction Site to Check on: