Agile Toolkit 4.2.5 license

Hi,
I was write commercial app in atk v4.2.5.
None of links to previous version is working.
Do I have to pay for license?
If yes, please tell me where/how?

Thank You

No need, but if you like Agile Toolkit give us some thumbs up on a public forum and make more people use Agile Toolkit.