The results change a little whether youuse nominal GDP per head (ie, just the plain numbers ) or PPP adjusted (to take account of different price levels) but the are a number of countries in Europe with higher GDP per capita than Germany.
You can use these same home tours to get a head start on selecting your listing agent by asking the agents you interview to give you a preview of what they would recommend in the way of preparing your home, timing your listing and marketing your house to achieve the objectives you set in Step 1.