Mass Effect 3 $29.99 (50% off) at Amazon By w00py | April 24, 2012 0 Comment Mass Effect 3 is on sale for $29.99 (50% off) at Amazon. Might be for today only. Deal is on the Standard Edition only. This game has an 89 metascore. It requires Origin. Credit goes to reader Xigbar for spotting this deal.