This deal is currently available in the UK only (and maybe elsewhere in Europe) and it's a good one!
Pretty much all of the digital editions of Brandon Sanderson's Mistborn titles can be downloaded for £0.99 or £1.99. Also included in this promotion are The Way of Kings and Words of Radiance. Find out more about this deal here.
Marc Turner's When the Heavens Fall and Dragon Hunters are also available for only £0.99 here.
There a lot of Joe Abercrombie books at £0.99 and Neil Gaiman's American Gods can also be downloaded for that low price! =)