@robertast - It is "free" if you count paying for it when you paid for your Product Design Collection as "free".
Or if you purchased Inventor outside the Collection, then it is the opposite of "free" 😉
The workflow shown in the video between 6:20 to 9:38 has a direct relation in Inventor called "iCopy". I can't remember if iCopy is one of those add-ins turned off by default (like AutoLimits) - but iCopy is awesome once you get the hang of it. You can build a complete assembly (including drawings) with reused parts and custom parts - place it as a copy, and have it resize to those picked points as shown in the video.
If you are into any form of cabinet making, then go with the other suggestions above - like Woodwork for Inventor/
Peter