Ebay is a very cool place to sell stuff you don't want anymore or to sell your house for example. The amount of money you will make depends on a lot of factors like the amount of competition your product has, the trust you have in the community, the amount of positive feedback you have.
First of all you must know what you can and what you want to sell on eBay. You can sell "real" stuff like your old toys and some stuff you don't want anymore, or you can sell digital goods like wallpapers, templates, scripts, designs and more. It all depends on the person you are. If you are a digital designer you might prefer design and sell digital works instead of "real" pictures and designs.
Some products you can sell:
- Toys you don't want anymore;
- Old stuff like historical things;
- Your own house!;
- Your old computer;
- Computer parts;
- Very old money (The first $1 dollar is being sold for millions of dollars)
- Website templates;
- Website Content (this one sells like crazy), add an example on the presentation page!;
- Car Stuff;
- Information (many people look on eBay for specific information eBooks;
- How to guides;
- Links (yup, some people buy them!)
- Webtraffic (you can sell some traffic packages if you have a script on your site)
- And a lot MORE!
These were only some random ideas you might like. Now if you are going for a real eBay business you'd better start some serious market research first, otherwise you risk wasting a lot of money and time in a business that is going nowhere. Ebay sells it's own statistics about what people are searching for on eBay. If you are a serious seller this is for you. It comes in 3 packages so choose the one that suits you the best.
You might want to advertise your presentation pages in your website if you are selling something really big. For example, advertising your own stuff on your website if much better than selling advertising to Google for example as you keep 100% of the profits. The only problem is you have to deal with all the coding but its worth the effort.
Ebay is a place for big shark fights sometimes. Don't go into bid wars because if you win the product you lose a lot of money! Don't start a fight with nobody. Keep it cool. Be a good mate and people will treat you with respect and trust you even more. Don't you ever start a rumor about someone! This way you are only showing the community your word can't be trusted!
If someone starts a nasty rumor about you just ignore him. If he gives you negative feedback contact eBay immediately. Some people just create fake accounts to take down the competitors! Looks nasty but it's true...