I've just had a couple of rads replaced. One 600x600 double and one 1.5x300 double. 3 valves also had to be replaced. I've recieved the bill and it it's a bit more than I expected as he tells me he charges a fix amount per radiator... how much would you guys expect for the work (it was about 5 hours on site). I'm paying the bill whatever just want to know if it's fair.