One of the aviation activities that I had been doing for many years as a Grade 1 instructor now requires me to have flight examiner privileges. CASA requires me to do one of their courses - I found info about these new charges on their website - about $1000 for the course. Not enough work on this particular activity to warrant the expenses of a flight examiner rating. I will drop my Grade 1 instructor activities soon after. I guess that is CASA's intent to move people like me out of the business.