prices?

Hi Guys, I think my water pump has gone after my track day at Snetterton yesterday, any one know how much the are ? Obviously ill confirm if it is this before i order one ! Cheers

Can anyone advise on how much I can expect to pay for a rear seat? My missus occasionally rides pillion, but its very occasionally so I dont want to fork out a load of money when I could be spending it on more important bits.