Panama City metro Lines 2 and 3 to cost USD5 billion December 4, 2014 | Latin America Finance The total cost of Lines 2 and 3 of the Panama metro is expected to be around USD5 billion together. Of this, Line 2 will require around USD2 billion, while Line 3 will require around USD2.5-3 billion.... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password