It's a pretty standard cost for a small business.
However, if your accounts and taxes are fairly simple, it may make sense to look for a cheaper accountant.
Yes, there are risks, but it's not all bad. The important thing is to be careful, diplomatic and willing to compromise. I hope that in the case of the Byrnes, everything will be resolved fairly.
a single platform where clear and relevant requirements for all countries could be found? No, this is not possible, because it would make our lives easier and we could forget about bureaucracy.