How can I find buy a serial for Pages '06?

Hi

I was recently given an older (2006) model MacBook as a gift, for which I'm very thankful.

However I'm currently in need of a job, and I would like to use Pages to create a new resume.

Unfortunately the previous user's 30-day trial is up (Imagine that lol), so I of course was prompted to buy a serial.

And that is the problem, as when I click the buy button I'm sent to a free version of Pages that I can't download, and no purchase serial button in sight. Could someone point me in the right direction?

Thank you!