Hi,
I would like to sell my Rohrmotor24 wall receiver and will give Shelly2 controllers a try. Further my three years old son likes the blue light of the Rohrmotor24 controllers and the drives the shutter up and down… 
I will go back to the manual pushbutton + Shelly2.
I have 8 receivers for sell (see link). Original invoice is available. All in all they work really fine. Sure, sometimes a signal gets not recognized due to 433Mhz, but it happens not really often.
My price is 18€ for each, all together for 130€ incl. shipment within Germany, but I can ship for sure in other countries with the appropriate surcharge.
Due to bad experiences with Paypal, I now prefer the classic bank transfer.
Bye,
Daniel