I clicked on Bargain Bin on the home page and couldn't find out how to restrict the listing to Xbox 360 games. The links I found removed the bargain bin restriction. When I clicked in Xbox 360, I immediately got a listing which started off with the systems, which I am definitely not interested in. A landing page with recent releases and recent top sellers would be more appropriate, especially if it made it easier to separate the systems and games.
I assume your business is a game-specific price comparison portal. It's not a bad idea, but you may need more content before you provide value over game store sites (ebworld.com) or game review sites (gamespot.com). Along those lines, why would I log in? There doesn't seem to be any community content that would require me to identify myself.