I think this is a great start, but there doesn't appear to be enough detail in some of the classes/libraries for sale. For example, there is an interesting scaffolding class but the details provided are very limited. There's no compatibility list regarding what databases it works with, or how customizable the output is via the object's functions. I understand not exposing the source code of a for sale library, but there should definitely be auto-generated API docs for each class, in this way I have a better understanding rather than just a limited demo, clearly in this case $29 isn't a big deal, but it does add an unnecessary layer of doubt.