Sourcebooks has said that Amazon is "working" on the pricing. Will let you know if they get it fixed (Sony also didn't get it lowered). They are extending the sale date thru tomorrow (assuming, of course, they get it fixed by then).
These are free in the B&N store (nook or nook app only), iBooks store (iBooks only) and the Inspired list is free from google (EPUB). I have links to each one
on this post, which I am updating as the stores get their acts together.