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 UltraDrive Kit USB-C Multi-Display Modular Dock (JCD389) - Box Front
j5create UltraDrive Kit USB-C Multi-Display Modular Dock (JCD389) – Box Front