The other person has more bids than you, because he bidded a higher amount of money. There are some scammers on eBay, so do what Chris said, check their comments and feedback score. Once I preordered FIFA 07 for the PSP on eBay, and I never received the game, so I made a complaint and I got $5 and I paid £15 for it. A lot of people were scammed. But don't let my story put you off, eBay is a good place to buy items, in your case, Grand Theft Auto merchandise.
Another site would be Amazon, it's a good site. Bought quite a few stuff from there before, mainly for my phone.