Loxone roller shutter control simple control?

So if it is the WLAN version, definitely install deep boxes.

Cost per Shelly is just under €20 plus one Shelly i3 if needed at all (if it is supposed to serve as an alternative to touch).
With that quantity, you can also order directly from the manufacturer in Bulgaria. That should make it a few euros cheaper.

1x Raspberry Pi 4 and an SD card approx. €120.

Software iobroker is free. But you do need to have some enthusiasm for technology and also read up in various forums occasionally.

As a tablet, I have a Lenovo, about 0.5 years old and a self-designed and 3D printed mount for the tablet. Of course, there should also be a socket available at that spot.

Is the Raspberry Pi 4 really necessary?
Or would everything also run via the tablet?

Is the Raspberry Pi 4 really necessary? Or would everything also run on the tablet?

Of course, everything also works via the Shelly App or Shelly mycloud, which looks and functions exactly like the app as a website.

What is to be made of the radio control of Somfy with Tahoma Box?

What is to be said about the radio control from Somfy with Tahoma Box?

The window manufacturer wants 200€ extra per roller shutter for the motor. And there would be about 20 roller shutters.

Window manufacturer wants a 200€ surcharge per roller shutter for the motor. And there would be almost 20 roller shutters.

Surcharge for switching to "electric roller shutters" or additional surcharge for Loxone on top of the normal electric roller shutters?

I can recommend the simplest and, in my view, most flexible solution: Normal electric roller shutters with switches, deep boxes, and independent conversion, e.g. to Bosch smart roller shutter control (flush-mounted). Takes a few minutes per switch, costing around 50 EUR per control. In your case, therefore under 1000 EUR. You are completely flexible with Alexa, HomeKit, etc., and can control by voice or create any automated actions you want. Optionally also centrally with any tablet on the wall or whatever you like. From my point of view, there are no disadvantages, but rather only advantages, including having the very simple switches/buttons near the respective windows. "Centralized" is then the option by voice control or tablet on the wall ... or also an additional Bosch universal button that could be used for this.

Personally, I couldn’t do anything with Shellys and despite the 2.5 times higher price, I decided on Bosch and have not regretted it.

Surcharge for switching to "electric roller shutters" or additional surcharge for Loxone on top of the normal electric roller shutters?

I can recommend as the simplest and, in my view, most flexible solution:
Normal electric roller shutters with switches, deep boxes, and independent conversion, e.g., to Bosch Smart Roller Shutter Control (flush-mounted). Takes a few minutes per switch, cost around 50 EUR per control. In your case, therefore, under 1000 EUR. You are completely flexible with Alexa, HomeKit, etc., and can control it by voice or create any automated actions you want. Optionally also centrally with any tablet on the wall or whatever.
From my point of view, there are no disadvantages, but rather only advantages, including having the simple switches/buttons near the respective windows. "Centralized" is then the option via voice control or tablet on the wall… or also an additional Bosch universal button that could be used for that.

Personally, I couldn’t do anything with Shellys and decided on Bosch despite the 2.5 times higher price and have not regretted it.

I have Elero as the roller shutter motor.
Surcharge for Loxone was 150€ per roller shutter.
Change from Elero to Somfy radio motor 214€ per roller shutter.