Fill air conditioning….

Hello Elchian, my black elk is just in the inspection of the “friendly”. Also today the parking aid is retrofitted. I was just tired of always avoiding narrow parking spaces, and from now on face the challenge. At the recording check was said that my air conditioning would no longer have the “full” performance, and it would therefore be advisable to refill the air conditioning. I have not yet found that my air conditioning system has somehow too little performance. He said It may just be that the climate is now shutting down in the summer when there is too little coolant in it. Anyway, I didn’t give the order to fill the climate. First of all, I certainly get this from a Bosch service profitier (my friend anyway has pharmacy prices) and secondly, I didn’t find anything bad anyway. Besides, my C70 is only 2 1/2 years old. My question(s): How expensive is it to fill a climate, you can do that with other would you just work on the statement of the master or wait until you really feel the cooling performance deteriorating? Have always somehow the impression my Volvo dealer tried to get his missing sales figures back in through the workshop.