eBay are a little strict about letting you withdraw your bid. They call it a 'bid retraction', and have a stringent set of conditions that you must meet before you are allowed to do it. Here are eBay's three acceptable reasons for withdrawing a bid.

You will often find yourself facing the choice of whether to pay a fixed price or keep on bidding. This choice might be presented to you in a single auction, or you might be choosing between different auctions of the different types. So should you use that 'Buy it Now' button or keep on trying to outbid everyone else? It's all a question of weighing up the advantages and disadvantages.

When you buy something from an eBay seller, you are giving them your money and hoping that you will get something in return. However many guarantees of safety eBay might make to you, nothing is certain: if you just give your money to scammers all the time without doing any checks then the chances are you won't get all of that money back.

Your reputation as a buyer (or 'feedback rating') is the most important thing people see when they deal with you on eBay. It is on the basis of this little number that they will decide whether they can trust you or not.

Have you noticed that whenever you open a newspaper, watch the TV or have a conversation, people seem to be talking about eBay? If you've never used it and you've no idea what it's all about, then the chances are that you're starting to feel a little left out. But don't worry! This email contains everything you need to know about the basics of bidding and buying on eBay.