Yes, that's the difference. However the volume in El Salvador is so small that it's insignificant in any real terms. It's a poor country with a tiny population.

Yes, that's the difference. However the volume in El Salvador is so small that it's insignificant in any real terms. It's a poor country with a tiny population. They certainly wont be able to exchange you USD for BTC and vise versa if you try to do it with a significant amount.