Fallout: New Vegas Digital Collectors Edition for $30 from Direct2Drive
This was posted 2 years 6 months 1 day ago, and might be an out-dated deal
Just saw this on Reddit, pretty decent deal considering the Standard edition is currently $89.95USD on Steam. Just use the coupon code with the already discounted price and viola!
According to this reddit comment, you can even associate the cd key with your Steam account for your convenience:
"ALL BUYERS READ THIS:
Upon purchasing this game on D2D, click "Click here to view and download your product!" This will take you to a page that lists your download instructions and activation key. If you want to play the game through Steam, open up Steam, hit "games\Activate a Product on steam" and copy and paste this activation key.
I know it works cuz I just did it. Thanks for the deal, OP!"
EDIT: A United States VPN may be needed otherwise it may not work.