Is it the same as a paid ticket? Looking on ITA, all the fees minus base fare?
Hard to say.
For AEP-IGR for example you're looking at
Argentina Domestic Value Added Tax (DL) $35.40
Argentina Gross Receipts Tax (QN) $11.40
Argentina Security Tax (TQ) $0.40
Argentina Airport Tax (XR) $8.80
If I had to guess I would say that DL and QN don't apply to award tickets and TQ and XR do apply to award tickets, making the cost $9.20.
But it's very possible that I'm wrong and the only way to know would be to call AAdvantage and find out.