Hi,
Yes i have bid on ebay items & been successful. It is a difficult one really I suppose the secret is to be there at the end of the auction to make sure that you are not outbid at the last minute as many bidders now wait until then. However, I would warn you that it is easy to get carried away then in the bidding war & end up paying more than you want to or can afford to. I would suggest putting your very highest offer on the item, then ebay will bid up on your behalf. Say the item is sitting at 50 & you will pay 100 then if you put 100 on ebay will only bid higher if someone bids against you if noone bids you will get it for 50, am I being clear?
You could also use auctionsniper, they come in at the last minute with your highest bid but no guarantees that someone won't have outbid you by then.
Good luck & I hope you win your item