[Filligree]

What's stopping them from arbitraging the price difference?

[colinbartlett]

It's impossible to buy dollars at the official price. They are very tightly controlled.

[wiredfool]

I believe that the banks are mostly Dollar->peso conversions and are extremely supply limited or cutoff from going the other way, and the black market is a both ways market.

[speeder]

Police pointing guns at them?