Yep, mortages doesnt exist in Argentina since 2001. I saw few adds last year, but the rates were hight and you had to have an argentinian income (and now I am thinking about the visa if you are a foreigner), like ARS$15000 monthly. And when you do a transaction of more than U$S 100.000, you have to pay an argentinian tax, I dont remember the percentage, any accountant might give you that information.