The Pro version of the widget is now available on the Android Market for 0.50€ or the lowest price the market let me set in your currency :)
The promotion will continue until christmas, possibly until the new year.
P.S. : The original idea was to set it to 0.10$/€ but unfortunately this is not possible! However, Google did it for some high-quality applications, to celebrate the 10 millionth download on the Android Market. Check-it out here.