Gollancz is developing the SF Gateway:
Gollancz, the SF and Fantasy imprint of the Orion Publishing Group, announces the
launch of the world’s largest digital SFF library, the SF Gateway, which will make
thousands of out-of-print titles by classic genre authors available as eBooks.
Building on the remarkable success of Gollancz’s Masterworks series, the SF Gateway
will launch this Autumn with more than a thousand titles by close to a hundred authors.
It will build to 3,000 titles by the end of 2012, and 5,000 or more by 2014.
No clue as to pricing. See the press release for more details and list of participating authors.