That is nothing to be discussed on this forum.
Please contact the Informatica sales representative who's responsible for your organisation, (s)he can provide you with all necessary details.
It may even be (assuming your organisation has a so-called enterprise license, at least this was the term used in earlier times) that this new group would not have to pay at all for a PowerCenter installation, but that really depends on your organisation's license.
In case if you have a valid account with Informatica you can get in touch with your INFA Account Field Sales Rep and he/she will be able to give your the details regarding the same.
Hope this is useful.