Link Light Rail Fares Set
From Sound Transit:
http://www.soundtransit.org/x10920.xml
Fares will start at $1.75 and go up to $2.50 for adults. It adds $.05 per mile past the base fare.
What I don’t see is an all-day discount card similar to what is used by Portland MAX or Vancouver’s SkyTrain. That would be nice although I know there are other discount programs available.