andyecon, thank you for the info. I've been looking for that too, a friend of mine told me that 15k is enough to live there, because they usually share the house with someone else, so 400-500 goes to living, and 300-400 for meal, so maybe we can save some yet.
I think i'm going to the student day also, even though i'm quite far away, Argentina, but considering that we will have to spend the next 5 years in a place, we'd better to have a better idea where is this place. Besides, it's a good idea talk to the graduate students there to know what will be the life there.
So, see you there.
P.S. i'm wondering if i can't make it to arrive 27 march, will they still pay me the 400 for the trip?
And last question, did you reply their offer mail?