Amazon currently has the unlocked BlackBerry KEYone on sale for just $399.99, which is a $100 discount. When it was first released, the KEYone sold for $550, and before this discount, it had never dropped below $440.
The KEYone has an intuitive smart keyboard with flick typing, fingerprint sensor, and customizable shortcuts. It's built with aluminum casing and Corning Gorilla glass for protection. It also has a Qualcomm Snapdragon 625 processor, a 3505mAh battery, and runs on Android's Nougat operating system.