At what age/milage should the cam belt be replaced please ?.
I've just changed mine at 100k, and that was the original. Book says 120k
Original on 100k
VW originally recommended cam belt every 6 yrs or 60,000k, think thay now they recommend it every - 4 yrs or 40k.
Make sure you get the tensioner's done

I'd also get the water pump done whilst you're at it because if the water pump gos you have to remove the came belt again.