Amazon discounts Kindle and Kindle Paperwhite by $20 today only

Amazon(s amzn) is taking $20 off of its e-ink readers, the Kindle and the Kindle Paperwhite. The deal doesn’t last long, though — the discount is being offered today only.

Amazon rarely discounts its Kindle e-readers. In fact, this is the only non-promo code sale on the front-lit Kindle Paperwhite that I can recall. The deal is good for both the versions with and without ads. That means a Kindle Paperwhite can be had for as low as $99, while a standard Kindle will set you back just $49. If you’ve been thinking about picking one up, it’s hard to argue with those prices for such capable devices.