It's not that difficult. Just bid higher than everyone else.
We had a detailed discussion on this board about a year or so ago about sniping. Half the comments were that you don't save any money. The other half of the comments said you do save money. I tend to agree with the ones who said you don't save any money.
The reason to snipe is really
1) you don't show your hand early, so other bidders will tend to think no one really wants the card
2) you don't need to worry about being at the computer to bid
3) you can change your mind & cancel or increase your bid up to some amount of minutes (maybe 5 ?) before the auction closes.