I just joined this forum and I am AMAZED at how unhelpful people are on these boards! only about one out of 15 responses was at all relevant to the topic (this one included, mea culpa!). Seems like most responses are lectures on cultural appropriateness and attempts to appear more porteno than thou!
When some one asks about airfare, let's keep the posts about airfare. The conversation about the differences in travel between Argentina, the US, Europe and the ethical/cultural considerations posed by taking a bus/motorcycle/train/plane are both interesting and appropriate for this forum, but NOT this thread. Keep it on topic, and if you don't have something helpful to say, shut your trap!
Honestly, this thread is 80% a discussion on buses, 15% people like me complaining about it, and 5% actual advice on airfare... What's the point?