Impulse Driven have spun up a nifty deal for Bastion, which brings it down to one of the lowest prices we've seen and well under half price. Note that they're infamous for retiring their offers at a moment's notice, though, and you might need to work fast.
So... buy it. Supergiant Games created an absolute masterpiece featuring tight combat, beautiful art direction and a truly heartbreaking storyline delivered by an impeccable omnipresent narrator. It's unique, thought-provoking and wondrous; a game that reminds us why we love our medium as much as we do. And, again, it's less than half price.