We are in Germany and switched to a heatpump system 4 years ago through incentives over the "Marktanreizprogramm" we got over 45% of the costs reimbursed. It's not even only on the supply chain crisis it's simply ramping up production and training installers because everyone was totally fine with just doing oil and gas for a long time but now everyone scrambles. Shortsightness not only from the state but everyday people and businesses. Thank god for being Links-Grün versifft.
For our detached house the price of a heatpump setup is about 40.000 euros. We decided to stick with gass for a while.
At some point a electrical heat unit would be better. Very inefficient, but with solar and batteries a lot cheaper than a heatpump. About 15.000 euros.