My local diesel engine place (the originally titled 'Diesel Engine Centre' in Coventry) charged me 120 all in for doing the job.
At that price it isn't worth me getting my hooves mucky. 8)
Have a look around your area and see if you've got such a place. Basically, it's all most diesel centres do so they can do it quickly.
HTH
cheers
8)
Eeyore