Bethesda's suite of RPGs have been discounted on Steam -- specifically, its Game of the Year offerings. The Elder Scrolls III: Morrowind gets the most drastic cut at 75% off, down to $5, while Fallout 3 has been discounted by 50% to $25. The Elder Scrolls IV: Oblivion straddles the middle with a discount of 66%, down to $8.50.

As far as sheer hours-to-dollars ratio, you're probably looking at something like eleventy kajillion.

[Thanks, Brian]