my pug sounds like a stuka dive bomber?

m reg 306 xldt, was pouring coolant down the street from the bottom of the radiator. on the 10 minute drive to the garage it sounded like a stuka dive bomber - a real head turner, everybody watched as i chugged by. The noise stopped before i got to the garage when the fan stopped - the car didnt overheat. The garage changed the rad, but now say the fan doesnt work. How much are fans? would i need to change/buy a whole assembly or can you get bits like temperature sensors and fan motors. Changing the rad has probably cost more than this car is worth, so I dont want to spend much more. coincidentally, does £240 seem reasonable to replace a passenger side window and change the radiator?
thanks pug knowers.