j5create UltraDrive Kit USB-C Multi-Display Modular Dock (JCD389) retails for S$199 on Hachi Tech.
This is the first time I came across a modular dock. Five kits are included in the packaging that you can swap around. Each kit measures (W x H x D) 34 x 13 x 21 (mm) and weighs 11g.
j5create USB-C Triple Display Docking Station retails for S$199 on Hachi.tech.
As the product name implies, the JCD543 is a USB-C docking station that supports up to three monitors alongside with other ports.