For comparison a normal L2 32A (single phase) charger costs about the same with installation. Tesla must be subsidising their's.
I wish everyone could agree on a standard for charging. In the UK we have L2 "commando" style and Chademo 50kW, but also 20kW CCS. Then Tesla have their own thing as well, and the adapter for Chademo is rubbish (it charges very slowly).
By L2 commando, do you mean the type 2 Mekennes plug (image: https://images.duckduckgo.com/...) ?
To make things even more complicated, there are quite a number of 3-pin (240V, 13amp) public charging posts as well.