Unfortunately it is 'up to $1'...

how do they determine how much they will pay?

i received $0.01 from AdSense one day on my blog, even though i hadn't had any clicks at all that day. anyone know the reason for this?

It's funny that the buttons are available in Hungarian too, but they forward to a page written in English, offering the download of the English version of this bundle...

Why? Probably because unlike the IE version, the Google Toolbar for Firefox has not been translated to Hungarian yet. (Firefox does exist in Hungarian though.)

   On the other hand I am glad that these new buttons at least have no orthographic errors, and no stray words remained from the Finnish version, which was the case with the AdSense Referral buttons. (still without being corrected...)
Examples can be found on this site: http://webni.innen.hu/

Spanish version of Referral Adsense has some errors too!