I saw them on a pic of a bB, cant find the pic as of now but will link it when I find it.
I have not sen them on any xb's and am wondering where they can be purchased?
Approximatley how much do they cost?

try www.bbist.com for the JDM ones . Lund is supposed to coming out with a set in a few months. I think they were going run about $50.00 for a set. There have been a few threads, you might want to try searching for them.

http://robearracing.com/pd_toyota_japan_bb_side_window.cfm