A great "Visit South America" fare given that you can apparently stop in Lima for free. I'm seeing good inventory for next fall/winter at $540 on ITA. Is there a way to get it down to $459 during that time period?
BTW, Taca is a good airline. As a UA 1K, I am greatly anticipating their entry into the Star Alliance. I've even enjoyed my stopovers is El Salvador, although the presence of guns everywhere may not be for everyone.