The Humble eBook Bundle has returned, letting readers pay what they want for a science fiction collection worth over $70. The video embedded above explains how the bundle will help support both authors and charity.

Readers have two weeks to buy the bundle that includes Little Brother by Cory DoctorowBoneshaker by Cherie PriestSpin by Robert Charles Wilson and Shards of Honor by Lois McMaster Bujold. Last year, the first Humble eBook Bundle counted more than $1 million in sales. Check it out:

If a buyer decides to pay more than the average at the time of purchase, they will also receive: The Last Unicorn: Deluxe Edition by Peter Beagle, the fantasy classic, now stuffed with a ton of extras. Just a Geek by Wil Wheaton, an honest and heartfelt memoir by the well-known Star Trek actor . We’ve been working hard to make sure all of the books are available DRM-free in PDF, ePub (open ebook standard), and MOBI (Amazon Kindle) formats, suitable for a wide range of eBook readers, mobile devices, and desktop computers.