Not in your list of countries, but yesterday JetA1 was €2.75 per liter at Lelystad, NL, EHLE. It used to be on par with automotive diesel but now it’s quite a bit more expensive.
On that topic, have you considered automotive diesel? My DA40-TDI planeshare does not allow it but if it were my own plane I’d consider it. According to our PoH (Thielert/Continental 135) one only has to watch fuel temp.
