It's very useful and you can customize it fairly easily.
Overall it's totally worth the price, and the demo helps you understand how to use it!

Note: To the Dev, would you be willing to make a (Quest System) similar to this plugins style and look? I know there is plugins like this  already... But it's a me thing, partly OCD I like to stick with a Dev that I like and support them. "And it makes the organizing the Plugin List/Bought even :)