Ending today at 3 pm ET, MacGameStore offers Steam downloads of the BioShock Infinite: Season Pass DLC for Windows, Mac, and Linux for $4.99. Coupon code "MACGAMES5OFF" cuts it to $4.74. That's tied with our March mention and the lowest price we could find now by $15. It includes Burial At Sea Episodes One and Two, Clash in the Clouds, and the Early Bird Special Pack.