HSS, Software Asset Management Unit (SAMU) coordinates a whole of Health licence purchase for SPSS and for SAS.  
SAMU Intranet link on HealthPoint

Costs are charged back to the department for both SPSS and SAS.  The cost depends on the number of modules purchased.  There is an up-front license purchase cost and lower annual license renewals.

If you wish to be added to the group of SPSS licensed users, please complete an HFN-070 form and attach it when you log an IT Request.

There are also email distribution lists in the email Global Address Book that shows who uses the licences - see HSS, SPSS Application User Group, and Infohealth, SAS User Group.

The SAMU FAQ's page on the HealthPoint intranet has some answers on common questions.
i) Can I use Academic/Education SPSS licences on work computers and laptops in the WA health system?
and
​​j) How much does a SPSS licence cost?