Never mind the 250EUR...Looks like you should get 400EUR!
AGP-LGW is 1644 km according to:
Great Circle Mapper
- EUR 250 for all flights of 1500 kilometers or less;
- EUR 400 for all intra-Community flights of more than 1500 kilometers, and for all other flights between 1500 and 3500 kilometers
- EUR 600 for all other flights.