You will remember that some time ago I added a price comparison service to the games pages on TA.
As I'd done all the hard work in getting the data, it seemed a shame to only be able to show the 360 titles, so a couple of weeks ago I created a new site for the comparison service to sit on called GameCompare.
You still get the benefits of seeing the cheapest prices for getting your games, but now you can set also set Price Alerts. This means when a game drops below your chosen target price you'll be emailed about it.
You can find the site at http://www.gamecompare.com