Sorry, I just feel I need to throw this out there and share this knowledge, another problem in Argentina is the developers that sell in what they call fidecomicio al costo. Some (not all) developers also try to game the system and evade taxes in order to make more than they should so they do not sell properly.
What happens is this, they tell you as an example you can buy in this fidecomicio at a certain price, they say 30-40% down and then 18-24 payments, depending on the deal, then you send th money to them and do a boleto but you send the money Negro, they do not tell you it is Negro but it is, all the payments are in Negro (that is why it i so hard to pay) and in the end, you title but there is no regstration of your payments and it never goes through the central bank. Then the developer adds payments to the deal and you pay 20-40% more than the original price because they have the ability to adjust for inflation or any other costs. The end effect is you buy in Negro, you pay more than you thought and when you sell, you have the problem because there is no way to show where the money came from and the AFIP nails you.
This is also a falut of the developers and not the system. A good developer will sell you on a closed price with no adjustments, do the proper paperwork and also have IVA included in the price, you can still buy pre-sale 40-50% down and make payments, but they are done via bank transfer and not cash. You can pay at their account in the US or at their bank in Argentina, then the money is registered through the central bank because it is a bank transaction not cash and you are ok. Come time to sell, you have no issues at all.
The moral of the story is you do not need to pay cash for things (what I mean is actual currency) you can do things via bak transfers which is the way it should be done. Real developers that are on the up and up do it this way and you are not required to pay cash and can do everything via wore transfer or check. You may pay 5% more in this scenario at most but everything is legit. The other guys do not pay IVA, any income taxes etc and they do this at costs thing and then do cash for their profit, so they make a whole lot more but it is crooked. Doing it legit still allows developers to make a reaosnable profit as it should be.
So, I say beware of the cash deal when buying from a developer and make sure you can do everything via the banking system. Also, make sure you get a good escribano who will make sure it is in Blanco. If you so it right, there are no problems.