> I'd also note that it's likely that the equipment is a lot better to withstand the motion and environment of being at sea. These are going to have to withstand a lot of salt-water air and spray while maintaining their motors in good working order. They'll probably also need to be rated for a longer lifespan given the amount of movement the motors will be doing compared to a stationary one (not just the travel of the vessel, but also the waves).

The dish cost has some good engineering explanations.

The 40-50x service cost increase, at least in territorial waters, is all about competition.