The promotion puts the Razer Phone at just $400 USD for a limited time. When considering its fast Snapdragon 835 SoC, large 5.7-inch 1440p display, and the buttery-smooth 120 Hz refresh rate, the new price point is not that bad of a deal for what are essentially flagship specifications.
https://www.notebookcheck.net/Razer-cuts-300-off-the-Razer-Phone-as-Razer-Phone-2-rumors-loom-large.329094.0.html