Opencores PCI bridge core

MiR,

How much is this core? Do you have to pay one time royalties or is there a per part fee?

How long is the learning phase you needed for propper usage of this core?

Do you have any experience about their customer support?

I'm sorry to ask these questions - but if i want to use a commercial core, i have to convince

my boss to spend some money for something which can be downloaded for free on opencores,

and in my opinion there are just 2 advantages of a commercial IP:

- customer support

- the duration of the learning/debugging phase

Thank you for your time,

Klaus