The Nook's $20 price drop is more than the whim of a few major retailers -- it's Barnes & Noble's new MSRP. Following Walmart and Target's recent discounts, the company's own website is now listing the glowing e-reader at its new $119 price. The reduction is almost assuredly in preparation for Amazon's Kindle Paperwhite, as B&N's announcement makes a point of bragging about the Simple Touch with Glowlight's included AC adapter and aversion to built-in ads. See the punchy press release for yourself after the break.