Alternative to the GIRA room thermostat 0392 03

Hello,

according to the Gira catalog, the room thermostats 0392 03 from the standard program cost €60.
There are providers online offering them for €50.

For an entire house, that's quite a lot. Since the thermostats will presumably only be set once and otherwise don't need to do anything else, I wonder if there are other providers that are also good but significantly cheaper.

A basic requirement is that the thermostats fit the GIRA program "Standard 55" so that I can install them in a corresponding GIRA frame.

Has anyone perhaps already looked for alternatives or had experience?

So far, I have only found "Halmburger room thermostat for GIRA Standard 55 and E2 frame" for €40.
Reviews have so far only been positive, but online reviews are initially unverified.
Maybe someone here can also say something about this?

Or do you rather believe that the money is better invested in the original thermostats from Gira for the future because they last longer?

I would be happy to receive any kind of information on this topic.

Read the thread. Maybe you'll find that you don't need one after all. I have also set my heating so that now I only have the individual room control active in the guest room.

good point, but
we have heating circuit distributors on every floor that make every room controllable
I cannot configure each room individually at the heating system
and I would like to be able to treat various rooms differently
in addition, the electrical wiring is already in place, only the switches and inserts are missing