Any1 know the going rate for a 2003 blob powersteering pump?

I changed my injectors today and for sum season when i went to drive the car the power steering pump has decides to pack in a think haha

 

Also, iv got a 96 wrx engine we used for parts to fix my mates engine! Is it possible to use the pump off that to fix my problem? Even just short term as my cars goin in for a map on wed nd i dont fancy wresteling it there haha

 

Bump

 

I have a good newage pump you can have for £30 posted.

 

Done will it be the correct one for a 2003 blobeye wrx? As iv heard there is a few different types!

Thanks