The iTunes App Store offers downloads of Atari's Greatest Hits for iPhone, iPod touch, and iPad with all 100 games for $4.99. (The app is free to download, but there is an in-app purchase to acquire all of the games.) That's $5 off and the lowest price we've seen for this collection since it was free back in June. (That deal lasted just a few hours, and the apps were only available to you until you re-installed the app.) Deal ends August 19.