There are certain real estate companies in Buenos Aires that deal exclusively with the English speaking foreign market. What that means in plain English is that the properties are overpriced for tourists or newcomers who really do not know the market well and do not know the true values of the properties they are looking at. Normally, the person buying from one of the tourist aimed real estate companies will pay between 30 - 50% higher on the purchase price than any local person would ever pay. It makes it very difficult when you want to sell because you have paid such an inflated price to begin with.
I advise anyone I know to stay away from real estate companies that deal exclusively with expats like Apartments BA, Reynolds. Maison Investments and Nancy Landi International
I brought a property in 2007 from Reynolds on Arenales and Parana Barrio Norte and ended up paying way over the market price I found out later on. I would definetly never recommend this company.