Yes, I saw those threads. But I am actually more interested in the 2nd question - whether anybody has had any good experiences getting AA to ticket out of India
Well, the amount of the tax is listed in those threads, something like 10.3 percent.
I can't remember anyone reporting that they actually purchased from India. The service tax that is imposed has always been considered a deal breaker, and the "good" fare from India, when the service tax and all the other taxes are added, ends up being not so good compared with other starting points.