I'm not sure what the deal is with MacUpdate announcing things as available only through Apple's Mac App Store. This is the second piece of software I've come across that's clearly available straight from the source, too - through Virtual Programming, you can purchase it for $39.99 and download via their www.deliver2mac.com service.
http://www.vpltd.com/index.php?main_page=product_info&products_id=261