you never know...there is always someone willing to sell something...however I find the leather on the seats just isn't that great of quality. So you are probably better off getting them redone in leather.
The CSX-S seats are the absolute worst feature about the car. Stock Si seats are comfier and sportier. I'd love to and probably will put seats in my car sometime over the next year, I'm just not looking forward to cruising around with the airbag light on.