As a Fourth of July promotion, Amazon has marked down the price of the Kindle Fire HD 7" (now $169), no promotional code required. If you prefer not to have Special Offers, add $15, and to double the internal storage (for movies and games, for example), add $30.
This is marked as a limited time promotion, but since it is being done via a price break on the product page, I don't see anything on how long it lasts. I suspect the prices are only good thru July 4th.