hi steve...
the heater is £70.65 from renault
i would do the whole job down here for £150.00...
thats matrix,antifreeze and labour....all in...
but im in Penzance..lol..
i think there quoting for replacing the 2 metal pipes which go behind the dash which you dont need to replace...they come in the box....
the book time i think is about 6 hours if i remember,...
hope this helps as a guide...
cheers
andrew