I am thinking to go to Medellin and stay few months to see how i feel and if is suitable for me to move permanently . The problem i have is when i see the official exchange rate at xe.com is lets say 1 usd = 3000 Col , but when i check sites for currency exchange offices on internet i see they offer 2400 Col for a dollar . This ls huge difference !!! How do you guys change money and where ? I am coming from Brasil and planing to bring cash US Dollars .