This is a great component for beginners. I have some specific issues with the implementation, mostly due to the fact that their display method is rife with HTML table calls, which makes it almost impossible to customize the look and feel and add anything AJAX-y - jQuery, etc.
Also, most of their code is fake MVC - it has the folder structures for MVC, but there is a lot of code that is simply flattened into big PHP functions, without extensibility or true use of model, view controller logic.
I bought this with the intent to customize it, and their work in the component is clear - Mooj obviously spent several years on it.
Unfortunately, it is a half-step to capable extensible web development and probably won't pass muster for future code releases or real customization.
I wish coding practices and half-truths about MVC were not the norm in the Joomla landscape, but I applaud Mooj for their hard work and the work so far - hope my "donation" keeps them moving toward a more capable code base.