Pro tip for those who like risk and are traveling regularly for non timely purposes they have dynamic pricing that rewards literal last 5m. I do Amtrak for like $15-40 NYC-PHL. You have to be signed in to the app otherwise they won't give you the sweetheart deal. Refresh reguarly the price changes constantly in the last 3-4h though I'll typically rock up to Penn and buy one 10m before.