not familiar with international works, but that's strange.

not unexpected -- after all, bankers exist to fleece as much as they can -- perhaps "disgusting" is a better word than "strange".

do you have choice of more than one broker?

(threatening their future ability to continue raiding your wallet is perhaps the only method that might get their attention...)

I could see €50 as reasonable, but certainly not €250.

you shouldn't have your lawful right to vote your shares held ransom by utterly ridiculous "fees".

I'd contact Lafrance or the Transfer Agent and seek advice.