Well, I'm one such, and I'm not sure I will be for much longer.
I was just charged £205 for a Class 1 medical, and I have to renew it in six months.
The only reason I have the Class 1 is to instruct. I've kept the instructor rating up because if it lapses, I'll never be able to renew - I have a CAA rather than a JAA rating. But the expenditure is getting silly.