With over 20 Billion Dollars in sales in 2003 (According to USA Today) EBay is truly the place for anyone from the starving college student to the Fixed Income Senior to make some extra money.
Almost all EBay Sellers (95 Percent According to USA Today) are individuals or small businesses.
A few more facts about eBay according to USA Today

1. eBay has over 86 Million Registered Users
2. 729 Dollars in Goods are Sold on eBay every second (That's Over 62 Million Daily)
3. eBay has 19 Million Items On Sale at any Given Time
4. An SUV is Sold on eBay Motors every 9 Minutes

Some other facts and figures not pointed out by USA Today

1. The Start up cost'sto run an EBay Business are virtually Zero
2. Anyone can Get Started as an EBay Seller often in less then a few Hours
3. You don't need to know anything about Web Design or the Internet to start an eBay Business
4. Ebay supplies you all the Tools you need including aListing Designer.
   If You can fill out a job application you can sell on eBay with their Listing Designer.
   

eBay Gives you all the help you need to get started as a Seller with their very good online Help file.
If you are a little nervous or unsure you can even take an Online Class that teaches you at your own pace how to be a seller and Ebay's very own eBay University.