IIRC ~70CHF for the outlet (which only works with the Feller electrical wall outlets AFAIK) + 10CHF (RJ45 module) + 20 CHF (single-port LC/APC module).

The cable extension is expensive, 150CHF or so for 20m, but you'd probably need it for this outlet because it's specially designed so it can be attached to the LC/APC module manually (no splicing). Something like Swisscom's ClickLC, just a different system.