So you are saying I should grow some weed instead?
Do what you gotta do to make your bread, but going international for an I might make a thousand or so is a risk you have to figure out yourself, but do you plan on going by yourself, do you know any Portuguese. Are you willing to let eat the loss if you end up robbed..nikkas in the hood will kill an outsider for a $1000 product, now nikkas in brazil and south America in general.
If you never been to Brazil I wouldn't do it, if you know people there do you trust them with your life
Now you looking to spend about $1200 on the plane tix, and about $900 on the two PS4s we will forget about other expenses like the hotels and shyt. Now lets assuming you sell them both for $1500 each you are left with about $900 profit, now is that in US dollars, of do they pay in brazil's currency. If so, now you have to factor in the cut the airport or bank might take to convert the cash into US dollars.
Now you have to factor in that the xbox one will be about $1000 there, so how much demand will there really be? Sure its easy for some here to say hey it's an easy choice PS4 is more powerful and cheaper, but that is not the case there. will the kinect shyt plus the much lower price of the xbox plus xbox having better games at launch and having a special fifa mode override the extra potential power the PS4 will have over the X1. The longer you are there to sell it, the more money you lose, and the more people will know that an American is there to sell something expensive, and gives whoever more time to set you up.
Also will Brazil's customs catch on to multiple Americans entering onto the country with multiple PS4s, and start handing out that duty/import tax... I think its a 60% tax ($240 each PS4) that would leave you with around $400 profit.
Like I said tho do what you have to do to make your money, at the very least you get a trip to Brazil paid for and a story to tell.