Sorry, for posting this so late but I just found it. Bits du Jour is a site that discounts a different piece of software everyday (usually at least 50% off). Today's offering is DefenseWall at 50% off. The only bad thing is the offer only lasts for another 2 hours and 12 minutes from right now. I hope that if you want it, you are able to act quickly. You can find it at the Bits du Jour web site.