Having organized a trip, I have NO problem at all with the organizer going at reduced, or no cost (and no, I didn't manage it on mine at all -- I paid full freight). There is a tremendous amount of work that goes into organizing a trip, and sometimes a frightening amount of financial risk. (Many boats and resorts require you to book a certain number of places and PAY for them in advance, and then you just hope you can fill the spots . . . which I didn't.) And once you get going, the group will look to the organizer for solutions to anything that goes wrong, whether it could have been predicted, prevented, or is even amenable to solution. Organizers EARN their free spots.