Anyone flying to Chile or Argentina from the US or Europe in January or at the end of December?

Hello everyone,  

We are in the middle of a trip through South America and badly need some spare parts. They are impossible to find in Argentina /Chile and having anything sent from abroad here is so expensive because of the sky-high taxes. Maybe there is someone flying into Chile or Argentina in January or at the end of December whom we could send the parts to bring with here and then get them sent inland? Would really appreciate it and would also tip for the favor ;) 

Thanks in advance 

Chrissa