Public transport around my city is just 50c per trip, wherever you go (apart from the airport). And multiple trains or buses count as one trip, as long as you get on the next one no more than 1 hour after you get off the last.
So you could theoretically play this game for like a dollar, all up. Absolutely perfect conditions for Jet Lag!
Now I just gotta find someone who wants to play with me.
I've got my first game scheduled for 25/26 April! A lot of logistics to sort out between now and then!