I notice also KLM's euro connections from BHD are priced at a rather healthy premium over other UK airports, I think they are aiming for margin rather than volume! To get to BUD with KLM from BHD it averages double that of a direct EI flight from DUB, yet from say BHX-BUD via AMS you would find KLM one of the most competitive at times. The fare differential equates to a lot more than just APD.