The line is Royal Caribbean, the ship is Vision of the Seas. Departure Port: Lisbon, destination port: Santos (Sao Paulo). Price is $1280/2 persons/room, that means $640/person/room (interior stateroom).
If you go alone, the price is $940/person/room.
Departure date is 18 november 2011.
Extra details: I am from Romania(Timisoara) and i need this trip because i want to go around the world next year with my bike, and that means i will leave home in september 2011, and i will be in Lisbon in 17 november 2011. I can reserve ticket from my country (from Bucharest) . If someone is interest about this trip, and let's say that person is from Germany or Spain, i don't know how to make about the ticket reservation.
I hope this details is enough for you