Enter “firedeal” at checkout to get it for $129 instead of $159. Be aware that for that price ($129 today or $159 regular) that you don’t get a charger. That’s $19 extra. And you sometimes will have to watch ads.
If you miss the one day sale you ought to think seriously about skipping the base Fire and getting the Kindle Fire HD. It’s faster and has a higher-res display and more memory. Cost is the same $199 the original Kindle Fire cost a year ago. By the time you buy the regular Fire and pay to turn off the ads and then order the charger you might as well have bought the HD version. That’s how I’d go.
We still like our Kindle Fire, BTW, and the new HD version looks even better. There’s also a bigger model with an 8.9″ display similar to the iPad. The 7″ is nice for portability and reading and is fine for apps, but is a little cramped for general Web surfing.