SPEED - The demo is running on a version different than what is sold.
I ran webpagetest.org on the demo vs. the newest version of classipress and wanted to point out that the two are very different in the way they load. The demo version is set up so that the majority of the javascript loads after the page renders (people get to see pictures and content before the java script loads). This is ideal.
http://www.webpagetest.org/result/120923_E4_6XA/
The actual version available for purchase is set up so that all of the javascript is loaded before the page renders... and this dramatically slows down the page speed. New visitors are left waiting for seconds while all of the javascript is loaded before they get any content... just a blank screen... I have watched people double and triple click on a link to a site because they thought they didn't click on it in the first place because it was taking forever for the javascript to load.
Why isn't this version available... and if it is what did you do different to make the page render prior to the javascript loading?