Even with the slashed price, the phone still comes with a year of Amazon Prime, which includes free shipping on millions of items as well as a growing selection of free movies, books, and music. 

Amazon launched the phone July 25, and it was widely seen as a bit of a flop with slow usage growth, according to market research (Amazon hasn't released any sales numbers). 

The phone has two main unique features: Dynamic Perspective, which allows it to react to how it is held, and Firefly, which can scan more than 100 million objects and make it easy to buy them on Amazon.com.