Inspection+air conditioning system

Hello, must next week for inspection after 2 years (35,000km). Cost point according to information F.: 450 Euro incl. VAT. and brake fluid change On my question, whether the air conditioning is checked with, the F. explained to me that would cost extra 100 Euro. With this would be lubrication of the compressor and refrigerant change. In the normal inspection this is not included, however, it would be usual to have the air conditioning checked especially every 2 years. Or is it enough for 3 years. Greetings Moz V50 2.0D 05/2004