It really is beyond belief what they are charging to change one piece of paper for another with no benefit.
The best thing about all these very expensive bits of paper is that those of us with a non expiring CAA PPL can continue to fly our LAA permit aircraft without any changes or cost and we can do aerobatics without having to get an aerobatics rating.
Wouldn't it be cheaper to get a US licence and just fly G reg aircraft on that?