Slipping clutch

Hello,
I was wondering if anyone has had to change their clutch lately? )discovery td5 2002) if so how much am i looking at? its started slipping at around 2000rpm,,, some one posted on here a while ago saying his did the same but thought it was doozel or oil getting on the plates!!! its still driving ok just slipping when accelerating above 2000rpm.
thankyou,

you need clutch kit plus dual mass flywheel plus spigot bush £350 ish plus vat plus labour

Thanks...