With Amazon’s Kindle Paperwhite starting to ship tomorrow, Barnes & Noble has raised the stakes by dropping the price of its Nook Simple Touch with Glowlight from $139 to $119.

While originally it was thought that it was only certain retailers like Target and Walmart dropping the price of the Nook Simple Touch with Glowlight, Barnes & Noble’s own listing for the e-reader is now showing the price as $119.

Dropping the price of the Nook Glowlight brings it to exactly the price of the lowest-tier Kindle Paperwhite, but there’s one key difference: the Nook doesn’t show you ads. The Kindle Paperwhite, of course, does, though Amazon refers to them as “special offers.”

New competition or not, it isn’t likely that Amazon is worried. The demand for the Kindle Paperwhite is so great that Amazon can’t actually keep up. Though it launches tomorrow, Amazon is displaying a notice that the Paperwhite won’t ship until October 22 for anyone buying it now.

While the Kindle Paperwhite is on a lot of wish lists, it isn’t like we’re talking about high-end tablets with competing specs. Both the Nook Glowlight and the Kindle Paperwhite are simple e-readers. While they certainly have differences, such as the Kindle Paperwhite’s front-lit screen, this isn’t a case where one device is clearly outclassed by the other.

The biggest thing to consider when buying an e-reader is which company’s store you prefer for content, so most buyers of either device probably already have their mind made up. The shipping delays Amazon is experiencing will probably end up earning some extra sales of the Nook Glowlight for Barnes & Noble, but it isn’t very likely that we’ll see droves of people jumping ship from Amazon.

Do you have a Kindle Paperwhite on the way, or are you going to opt for a Nook Simple Touch with Glowlight instead? Do you simply use your phone or tablet for your e-reading needs?