As my title points, the idea is great and already the reactions that I've got are awesome.
But the quality of the boxes...paper.
It won't last for long.
For the price paid I've expected bicycle stock at least on 2-3 boxes.

8 minutes video explanations is probably more than enough if you know the sleights.

For beginners...not at all

It's nice to have a nest of boxes routine that's as organic as this; the tutorial though brief covers the main concepts you'd need to run the routine properly. Alternatives and suggestions are also provided. It won't be too easy for beginners but intermediate and advanced card handlers should have no issues.

My main gripe is with the quality of the card boxes provided. They're thicker than the regular card box material so in theory it should last longer but it is STILL made of paper-based card stock which means it will bend, dent and not last very long in one's pocket; especially if you're working this often. Plus one of my boxes came apart almost immediately; the glue had come apart and I needed to remedy it myself.

All these aren't really big issues; however this isn't exactly cheap for what you're receiving. If it was $15 cheaper and I faced these issues, I would simply chuck it to "You get what you pay for", but clearly with this, you are overpaying. So because of the price point and the lack of quality you receive, I'd have to knock it down by 2 stars.

Gustavo is a highly creative magician, just wished more was done in R&D with this before putting it out.