Well you could always download the 30-day trial then delete the .plist when it expires 😀
No idea whether that would actually work, and I can't really say that it's "non-pirated"!
That's the difference between Mac and Windows. On the Mac, you download a 30-day trial and it expires after 30 days. On Windows, you download the 30-day trial, and Windows has crashed and burned before the 30 days are up, so you reformat and get another 30 😉