Lots of us Backlist eBook authors are participating in Smashwords' Read an eBook sale, if anyone's interested. There's no one central list of participating authors (we had very little advance notice of the sale), but if you're interested in
DRM-free, discounted (25% - 100%) books by proven, established authors, you might want to check out the links authors have posted on these sites:
Doranna Durgin's WordPlay blog
Jeffrey Carver's Pushing a Snake Up a Hill blog
Julie Ortolon's Facebook page
The sale ends Saturday, so there's not much more time to take advantage of it!
Pat