I have had clients pay for me to travel to look at a boat. Not to see what color the pillows may be but to tell the client if the boat is good enough that he should spend the money for him and his wife to travel a long distance to inspect it themselves.
If the broker goes without the buyer just to inspect the boat, so the buyer does not have to make the trip, then paying the expense of the broker is reasonable. Especially if the deal does not happen. The buyers broker should travel to the survey without a doubt. Unless I have a close relationship with a client I would not want to spend the money myself. But I have traveled from Florida to California, Europe, New England, the Great Lakes and more for clients I know, without charging them.
I do "courtesy showings" all the time of boats here to buyers for brokers from out of state, so that broker does not have to travel here.
Menzies thinks the broker will get 60% of the commission, but most interstate deals are 50/50 and the brokers have to split 50% with the office, nothing like the $15,000 to $19,000 he writes about.