It's the same in all branches of motorcycle sports and it doesn't get easier as you get older. I have been "lucky" to represent GB in iceracing and it costs.
While having sympathy for the riders and followers, I would love a meeting that close to home.
Having ridden in Europe, Russia and Scandinavia it's just part of the sport, and IMO it's also why British riders don't get enough overseas' experience.
It is an honour to wear a British race jacket but it comes at a cost as you say, I hope the 4 that went enjoyed their racing and that the financial side can be improved.
It would help a lot of the younger riders to partake in the UEM/FIM under 19/21 team and individual championships if a sound financial package could be organised, other nations seem willing to invest in their youth far more than the UK.
The UK has the largest league set up in Europe, but can't support a team of 5 youngsters to go to Germany.