We have considered several options. This does include shipping by a variety of methods.
Factors to be weighed are cost, time, wear & tear, safety, amongst others.
FYI, I know of two aircraft that were significantly damaged while being shipped from AgustaWestland (Italy) to Agusta Aerospace (USA).
Also, the roll on-roll off option entails much more than landing at the docks and taking the blades off if done properly.