...what about a fuel stop somewhere along the adriatic east coast ? Slovenia, Croatia, Montenegro, prices there are usually well below 2.50 € per liter nowadays.
LJPZ Portoroz 2.20
LDZD Zadar 2.25
LDDU Dubrovnik 2.28
LYTV Tivat is very cheap, should be below 2 €/L
that'a a nice link about fuel prices
https://www.you-fly.com/airport/
