Recent Defi Advance Boost Meter, Oil Press and Oil Temp Meters installed in GD WRX.
Below are some Pricing for P.WRX. For full list of prices, please go to first post of this thread:

1) New Defi Advanced BF Boost 60mm (amber) Part No.: DF09902 - $280
2) New Defi Advacned BF Oil Press 60mm (amber) Part No: DF10202 - $330
3) New Defi Advance BF Oil Temp 60mm (amber) Part No.: DF10402 - $265
4) New Defi Advance Control Unit Part No.: DF07701 - $190
5) Installaton -- $50 per item.

Below are some pics--

Meters installed in centre dash:


New Defi Advance controller sold through Evolution R is E-marked and meets the requirements by the Department of Transport:


Defi Advanced Controller comes with a remote cntroller that can be mounted neatly in your Subaru: