Re: Braces price London vs German city near CH
This isn't going to be helpful but I think even the experts need to know more than you have said here to give an accurate answer.
'to start braces' most folk have braces because they need them. If you need them do you know exactly what type you require?
'2-yr braces' I thought one wore them until the problem was solved and then probably had another system to make sure the problem didn't return. Are you sure 2-years is the limit?
If you plan to go to England at the weekend to have them done, can you ensure that the guy will always be able to do them exactly when you need adjustments? If they are uncomfortable (understatement) or something goes wrong with them, you won't want to wait for ages to have them looked at.