I may be living in a hole and late to the party, but just in case I am not, I thought I would share this website I found:
You sign up with your email address, then pick which categories of books you like, then select what type of reader you have (Amazon Kindle, B&N Nook, etc.). Then you will get an email once a day with books that are on sale or are free (prices will be shown) that meet your interest - book cover and a short description of the book given. The book links in the email will take you directly to B&N website if you indicated you have a Nook etc, so it's super easy to use.
So far I've found one new series I liked (Soulbearer Series by Crist McHugh, the first book is free "A Soul for Trouble"), and a book I had on my to-read list already that was on sale (Maybe Someday by Colleen Hoover - that deal ended Sept 1 though, sorry)
Re: Free and reduced price e-books: BookBub
My Blog
my read shelf:
PSA: Throne of Glass is on their for $0.99 right now. Pretty fun YA fantasy series!