B&N is having a 50% off sale this weekend on the 1,000 best-selling Nook Books (excluding Agency published books, of course). The sale price is from the list price, so not everything is marked down (some non-fiction titles, such as cookbooks, may be higher than usual -- or, higher than Amazon's regular price, in any case), but in many other cases, there are bargains to be had and some very new releases are priced at paperback prices, as the only other edition currently out is hardcover (and their list price is fairly high), which means you can grab them now to read, rather than waiting months for the price to drop under $10.
Don't have a Nook or just prefer to read on your Kindle? If you see a book you like on the sale, just check in the Kindle store, as Amazon has been price matching many of these deals (and will probably drop more of them, as the weekend progresses).
The sale has categories listed in the menu bar on the left of the page, so you can narrow the list down to a manageable size and you can also sort it by publication date (to find the newest releases), price (only the best bargains), author, etc. I've already found a couple that I'll be picking up this weekend and have no doubt that there is at least one or two books there that will tempt you, as well.