I am also interested in this as I want to fly Buenos Aires to Calafate in Feb. Fares are very high for my dates ($700 return or so) I surmise due to a combination of a) higher fares for non-residents and b) peso conversion at the official rate. I know that the first premium is unavoidable but is it possible to buy non resident tickets in pesos and therefore - via blue dollar - reduce the price. If so, I'd see two options - pay cash on arrival after blue dollars have been acquired or get someone I know in Argentina to pay at the blue dollar rate and recompense via an amazon gift voucher or similar. Would welcome any info and views on these points.