A tip of my hat to Broke207, where today I learned that Megabus is now offering special $1 fares for one-way travel between Portland an Boston.
Megabus is a pretty well-known operator of low-cost intercity buses in the US and UK. Concord Coach Lines, which connects Portland's Transportation Center with Boston's South Station is Megabus's partner in this low-cost venture. The $1 deals are limited to a couple of seats on each trip and require booking in advance. Megabus and competitors such as BoltBus have similar deals between other cities with special reduced fares. So the next time you are heading out of Portland via public transportation, don't forget to check out the Megabus offer. I enjoy the legroom of the Amtrak Downeaster compared to the bus, but snagging a $1 ticket is a good trade-off.