Phone cards have always been a mystery; mass confusion for me to decipher. Which ones are cheaper? What are the hidden fees? How much have I used? What do I have left? Where am I going to get one? Questions, questions, questions!
oHello Instant Phone Cards & Calling Cards get delivered to you instatly via email, so there's no question about which service station is open, and has them in stock. Plus you can easily 'gift' one to friends or family out of town! (Call me!)
They let you track your prepaid card's usage online. There are no extra fees, eating at your calling-cash flow. You can add more money/time as needed; recharge it, baby!
BTW: they hve the best rates I've ever seen to Argentina! wow...