How much is the average cost to replace an air conditioner hose in a volvo s-80?

Well, the hose of my dads car (a volvo S-80 apparently blew off and we dont know if the hose can be clamped back on or if a new hose is needed. We wanna know how much it will cost if the hose has to be replaced.|||Call several repair shops and ask them i am sure they will help you out with a quote.