I know you surely invested a lot of time and efforts writing this script, and as a webmaster and ex programmer I know it's not easy and everything takes time and headaches.
But in the time I watched the video I'd make more than 20 freesites, using for example some templates, arles and notepad.
If you're going to sell it for $150-200 you should add some special extra features that makes it worth the price.
Just my
And keep the good work!