Duh it was all on the tinterweb homepage. The Carlos Fandango with full bells and whistles:
Ducati 48T Kit. All bikes with air-cooled clutches since 1990 except 1098/1198.
Six ramp, dry type. Hard anodised in grey with a Red pressure plate using a ceramic friction surface. Uses 1098/1198 springs. Includes Clutch centre, 48T Alloy clutch basket and 48 tooth clutch pack
£799 plus VAT (Ref:003) which is £960 (ex shipping)
Sigma have others available that are cheaper.