I love shopping on Ebay.com! You can find so many unique things that you can't find anywhere else. Some that you need and some that you didn't know you needed until you discovered them! I've purchased 350+ items on Ebay.com and have only had two negative experiences.
Some tips for those new to purchasing on Ebay. You can bid on items or use the "Buy it Now" feature to purchase an item for the specified price. While it is exciting to bid on items, be careful that you don't get too caught in the excitement of winning that you end up spending more than you wanted to or get hooked on bidding on lots of different items. I did for awhile and found myself in debt so I learned my lesson. Just know your limits.
Always do your homework on the seller that you're thinking or purchasing an item from. Check their percentage score. The closer to 100% feedback the better. I won't touch anything under 90% and am even leary of those under 99% but that's just me. You also should look to see how many items the seller has sold as that does factor into how good or bad their score seems. If they haven't sold very many items and have a very low score that's a huge red flag while others that have sold thousands might not be as bad but still worth doing your homework. I always go to the seller profile an while it scrolls their most recent feedback, click on where it says to "View all feedback". You can then see how many good, neutral and bad reviews they've had for the last month, 6 months and 12 months. I often will scroll through many pages of feedback to find the neutral and mainly negative reviews to see why they received this feedback and then determine if I want to do business with them. Also if you find a seller that has sold very few items, look at the ebay id's that left feedback for them. If you see that there are many of the same ebay id leaving feedback, that could be friends of theirs building up their score to give you confidence in buying from them in hopes that you won't look at the id's. Early on when I started using Ebay I got bit by this very thing. They were a fraudulent seller and I never received my item and they closed their account!
Overall Ebay is a great experience that I highly recommend, just do your homework to get the best experience. Happy shopping! :)