Sony announced the Xperia XZ1 at IFA last summer, and the phone subsequently made its way to the US in mid-September. It launched over there, in unlocked form, with a price tag of $699.99. In the meantime the price has dropped to $599.99, but today there's an even better deal to be had if you don't mind purchasing the handset in its Warm Silver iteration.
This color version, and only this one, currently retails for just $543.44 at Amazon. The device can also be bought in black, Moonlit Blue, or Venus Pink - but all of these still cost $599.99.
It's unclear whether this is a limited time deal on the silver model, so if you'd like one then you'd better act fast. The Xperia XZ1 has a 5.2-inch 1080p IPS touchscreen, a 19 MP main camera, a 13 MP selfie snapper, the Snapdragon 835 chipset, 4GB of RAM, 64GB of expandable storage, and a 2,700 mAh battery. It ran Android 8.0 Oreo from day one. Note that like all Sony handsets launched before 2018, the XZ1 also ships with its fingerprint sensor disabled in the US. You can get back that functionality, but only if you fiddle with flashing the EU firmware.