Bought a used Razer BlackWidow Ultimate 2016 Edition for $9 : r/MechanicalKeyboards
Razer Blackwidow Ultimate 2017 – Gaming Keyboard: Designed for Gaming, Mechanical Waterproof and Dustproof Keyboard, RGB Chroma Backlight, Up to 80 Million Pulses, ES Layout, Black : Razer: Amazon.co.uk: PC & Video Games