My husband and I are flying into Punta Arenas at 21:45 and are planning to head straight to Puerto Natales. At that hour, I assume that the buses departing for Puerto Natales will no longer be running, (Just checked the bus schedules, and this is indeed the case.)
We would like to rent a car at at Punta Arenas airport and eventually drop it off in Puerto Natales 4 days later, but after checking the rates, we discovered that it would be cheaper to rent the car in Puerto Natales. If we don't rent a car in Punta Arenas, we'd like to know what our options are. How difficult will it be to procure a taxi to take us to Puerto Natales at that hour? (It's a long drive, and I'm sure that the fare won't be cheap.) We are also open to private transportation. I just checked the rates on Grayline.com -- they are asking for US$ 664! Another company, Todo Calafate, quoted my husband US$ 235 -- has anyone heard of this company? Could anyone recommend another company?
Thank you!

