I took my leaking series 3 rad to a place in stoke the other month for a refurb quote and he wanted £75 - i coughed at the price and said i'd think about it, on the way of of his door he mentioned i might want to try to spares place down the road - took his advise and bought a brand new orginal one for £49.
Copper is really really really expensive at the momment so you might have better luck taking it to a scrap yard and weighing it in.
