Found a fare (maybe strictly not MR),but by OSL and generaly europe standards I would say yes! And then again Buenos Aires is some city!!!
TK OSL to EZE 5291 NOK/902 US = 4,9 cpm. Abouth the same from Sweden.
Available from 12-18 feb and 9-18 feb. Booked it and called TK,they absolutely assured me that you earn miles on it. Layover in Ist just over 1o hr,so qualifies for free hotel.