I have a lower arm bar kit.
Fits 04-on Impreza and Forester XT ( possibly 02-03 impreza, but not sure)

$180 plus shipping

I also have another lower arm bar kit- minus the bolt hardware.

$150 plus shipping

See:
http://www.scoobymods.com/forums/showthread.php?t=5722

for install info

brand new retails for 220-240