I seems to me the booking engine might just say "$149 per person" because they don't have another way to list it. I can't see the booking engine because I don't have a reservation.
If you go to book it, does it ask you how many people you plan to include in the reservation? That would mean they really plan to charge per person, but I tend to doubt that.
You could go ahead and try to book one - I am pretty sure you can cancel a reservation you make online if you change your mind.