Targus USB-C Universal DV4K Docking Station DOCK160USZ-50 P60 4K DOCK160

This is a used dock in great condition. The power supply is included. They sell for $279 on Amazon.

Create an environment that gives you dual 4K monitors. This USB-C Universal docking station extends the peripherals of your laptop, while adding functionality and charging for USB-C laptops up to 60 watts. Use one cable to connect everything. This compact docking station allows you to take convenient advantage of all of your devices to increase your productivity. 

Supports dual 4K monitors with 2 DisplayPort and 2 HDMI ports
Thunderbolt 3 compatible
1 USB-C device port 
1 Gigabit Ethernet 
4 USB 3.0 ports
1 3.5mm combo Audio In/Out