Told on numerous times that return of cars to co-terminals is allowed. Rent in LAX and return to SNA/LGB/BUR etc. So I booked my airlines ticket like that and told another traveling with me that they could do the same. But now I am being told by Avis that the rates are TWICE as much. Over $50 per day on the weekend. What? Co-terminal? I might as well return the car to SFO. They keep saying "one-way" rental. If it really is a co-terminal then it is not a "one-way" rental. Somehow I think I am just being screwed by the Avis computer and reservations is only going by what the computer tells them even though logically they know the rates should not be that high. Any advice?