These are nice, and very rare. We have a bunch in stock now.
If you haven't seen them, they're real carbon fiber pieces that fit between your WRX factory wing and the trunk lid. They serve to raise up the wing so it's more in the airstream. They use factory holes, and they include provision for the factory stop lamp wiring.
The quality is top-notch. You won't find a better-made piece.
Zero Sports Carbon Fiber Wing Risers - click me!
The dollar has seriously devalued vs. the yen, and I don't see that changing, so these parts will not get less expensive. Click the link for more info, pricing, and to order.