I'm interested in booking a trip from Buenos Aires (AEP) to Iguazu (IGR). The perennial problem is that internal Argentina airfares are expensive for foreigners. When I do a search on skyscanner, though, I get a $168 LATAM fare that tickets on Cheapoair and some other obscure OTAs. LATAM's own website wants 2x for the flight. The fare rules listed on Cheapoair say nothing about having to be a resident. Does anyone know where in the rules this "should" be listed? I would think in the "Eligibility" section, which says the following:

LAN Airlines :

RULE APPLICATION AND OTHER CONDITIONS
NOTE - THE FOLLOWING TEXT IS INFORMATIONAL AND NOT
VALIDATED FOR AUTOPRICING.
FARE ECONOMY
APPLICATION
CLASS OF SERVICE
THESE FARES APPLY FOR ECONOMY CLASS SERVICE.
ELIGIBILITY
NO ELIGIBILITY REQUIREMENTS APPLY.

Is there any possibility this fare is actually legitimate for foreigners to use? Based on what I know from past experience, I'm a bit skeptical, and don't want any airport drama.

BTW, I read somewhere that the new Argentine gov't is going to allow low fare airlines to operate in Argentina this year. Any possibility that the punitive fare rules against foreigners will also be relaxed?