Welcome aboard and already looking forward to your contributions.]]>
Just for the record. Ubercart is Open Source ( http://www.opensource.org/ ) which means it is completely free. It is not only free as in free beer, it is free as in free speech.
Also Ubercart 1.0 (stable release, ready for production use) was released June 4th 2008. You can visit http://www.ubercart.org for more up to date information about Ubercart.