As a consumer, you have to love price wars, so long as both companies competing for your dollars stay in business. Right now there's a price war brewing between Barnes & Noble with its Nook HD and HD+ tablets, and Amazon with its Kindle Fire HD tablets, the latter of which is now on sale starting at $169. This is a temporary price cut and if you're a Prime member, you get free 2-day shipping to boot.
The 7-inch Kindle Fire HD normally starts at $199 for the 16GB model with Special Offers (homescreen ads, basically). It's now reduced to $169 with Special Offers or $184 without (down from $214). If you opt for one of the 32GB SKUs, you'll now pay $199 for the model with Special Offers (down from $229) or $214 without (down from $244).
Barnes & Noble slashed the price of its Nook HD to $129 (down from $199) and its Nook HD+ to $149 (down from $269) in June. B&N also recently revealed that it will no longer manufacture its own Nook tablets, choosing instead to outsource production as one of its "big steps to reduce the losses in the Nook segment."