Can anyone tell me if it is possible to purchase AND ACTIVATE a prepaid SIM card at any location in EZE airport? I am traveling next week to EZE and would like to get a number the moment I arrive. I have seen that CTI sells prepaid cards at Farmacity, but do they actually sell the SIM chips at the airport that i can put in my phone and activate from there??
I am not necessarily looking for CTI... it can be Personal as well... so if anyone has any suggestions i would really appreciate it!

-Eli