Lisbon Metro charges €1.45 per trip, which is a bit closer to 1st world/U.S. metro prices. I tend to cover a lot of ground on a daily basis so getting around in a timely fashion is important to me. Lisbon’s monthly unlimited card pays for itself in around 10 days taking two trips per day. I use metro services up to 6 times per day. Lisbon Metro ticket machines only give out top up cards, day passes and weekly passes which can add up if you are navigating Lisbon for over 2 weeks.