Personally I think the whole colour monitor  calibration an utter waste of money and if the Monitor is new or you think it is way off then maybe it is worthwhile.. But to be accurate what is the point of having just one part of the cailbration done. as the camera,  the profiles you use, the software  and the printer all need the same sort of process.. Take a look at the costs of the whole package! 

Danny O'Byrne  http://www.digitalartzone.co.uk/

"All the technique in the world doesn't compensate for the inability to notice" Eliott Erwitt