You open an account with a sniping service, give them your Ebay ID and password (always make sure the service you use has been recommended by people you trust) and set your maximum bid. The service bids for you right before the listing ends, usually about 5 or 6 seconds before. No bidding wars, no "forgot to check", and you can cancel any bid any time up to 5 minutes before the end of the auction if you change your mind or find out that the item is fake or the seller isn't trustworthy.
I like eSnipe, they have a free trial period and once that's over they charge a fee only on the auctions you've won. You need to set up an account to cover the fees.
http://www.esnipe.com/
http://www.esnipe.com/