I took a chance by paying for it after going through their online demo of the component which seemed to be missing some functionality but only because viewers can edit the content. But no, what you see online is in fact what you get!
The component is really just a multi level form with behind the scene calculations. Your prospective clients can’t even see the quote dynamically as they are building it? Only you see it when they are done filling out the form and send it. Note that I couldn’t even get that far without turning off my RsSEO URL rewriting cause they only support Joomla SEF ... This should be flagged as a technical requirement from the start!
To add to this, you can’t add a “quantity” field to the calculations. So if you offer a product in which a prospect can buy many, you can only ask them how many they want in ranges through their only available control type which is the “dropdown list”!
I hope to see some significant improvements in the short term caus I will admit that this general idea is good.