One highly profitable eBay business idea is the concept of power selling. eBay takes several things into consideration when determining who power sellers are; but for the most part, it doesn't really matter if you have power seller credibility, as long as you are making the amount of money that you are shooting for. A power seller badge is a nice thing to have on your seller profile, as it may help more buyers to trust you. However, it's not necessary. The real concept of power selling is simple. Sell a high quantity of goods distributed throughout a limited niche.
A good eBay business idea for power selling is: sell items that you can make a decent profit off of individually. Most of the time, these are electronics items. For example, Apple computers tend to keep their face value and stay at least somewhat close to their original price (60-75% of original price).
If you are power selling items that go for $5.00 or less, there is a lot less profit to be made off of each individual sale. To be successful at something like that, you need to sell thousands of items a month.
Most eBay power sellers do not ship the actual items themselves. Rather, they use drop shippers to ship items. These sellers are nothing more than affiliates of another company. They do not keep all of the profit that is made off of each sale. Rather, they get a percentage. This is how the majority of power sellers operate. This can be anything from telecommute power selling for a company across the country, to going down to your local PC shop and helping them sell their items on eBay for a cut of the profit.
Now that you have a basic understanding of power selling, the rest of the article will focus on some good ideas for niches and specific items to sell.