Are LAN sockets still up-to-date? WLAN/wireless is the future!

It's not about needing all of them, but that there is at least one in important places. I would rather plan 5 sockets and 10 outlets too many than one too few.

If you do it yourself, a socket might cost you around €30 including materials. I chiseled, put on plaster, connected, and measured myself. The only thing the electrician mostly did was pulling in the cables.

And that's exactly the point, doing it yourself, but you have to have the time and the desire for it.
I also supply my house only via WLAN. I only have one network connection via LAN from the utility room to the hallway on the upper floor, so two sockets with a LAN cable between them. That fun already cost me €150. Meanwhile, I have a switch on the upper floor and from there LAN cables laid to my PC (previously DLAN) and my daughter's PC. I have to say, even that wasn’t cheap (cables + connectors + sockets + switch + tools = €90).

And that's exactly the point, do it yourself, but you have to have the time and the desire for it.

You have to make time for it, I’m currently in the basement until half past nine in the evening laying cables for TV and network. But if you have no desire, you shouldn’t complain about the price.

I agree with you. Either you do it yourself (provided you can get the materials cheaply, otherwise the savings are not worth mentioning, because the retail prices add up. 50m Cat7 installation cable €35, 20 RJ45 connectors €15, double socket €10, etc. + labor time!!!) or you pay the craftsman.

What did those who only had the cables pulled by an electrician pay for it? And how many meters were it?

I agree with you there. Either you do it yourself (provided you can get the materials at a reasonable price, otherwise the savings aren't worth it, because the retail prices add up as well. 50m Cat7 installation cable €35, 20 RJ45 connectors €15, double socket €10, etc. + labor time!!!) or you pay the craftsman.

What did those who only had the electrician pull the cables pay for it? And how many meters were it?

A flat rate of €190 per double socket. The cables hung in bundles from the ceiling in the basement, the rest was my job. Our electrician was the most expensive in the street.

190€ per double socket just for cable pulling + cable?

Can I top that: 170 mono and 210 duplex, building with GU. But no loose ends – everything in the basement was connected to a patch panel, at least.

60, on the other hand, cost for an empty conduit with a blank cover. So I only chose the big solution where I would really get frustrated later if I couldn’t get a cable into the conduit: media corner, study, and attic (because of the many corners and bends). I am now outfitting the empty conduits myself, piece by piece, where I need them.

I also only supply my house via WLAN. I only have one network connection via LAN from the utility room to the hallway on the upper floor, so two sockets with one LAN cable between them. That already cost me 150€. Meanwhile, I have a switch on the upper floor and have run LAN from there to my PC (previously DLAN) and my daughter's PC. But I have to say, that wasn’t cheap either (cables + plugs + sockets + switch + tools = 90€)

Do you regret your decision to only have one socket now? Did you install everything surface-mounted or how did you do it? Is the switch then hanging in the hallway too?