Has anyone else tried this masterful multiple bill switch with regular bills? If not, you can check it out on Penguin.
This is definitely an advance in bill switches.

I'm a big fan of Juan Pablo. Even though I have not bought this yet, I disagree with the negative reviews (most are positive). If you are a creative magician, you can see how to get around the issues with borrowing the bills - and having to give them back.
Here's an idea (doesn't give anything away): Use fake $100's. Ask if you "anyone has a dollar I can use?" Each of the 4 you put into your pocket, making the tension and comedy. "Thanks - that's how I get paid." Take out your pre-folded bills, pretending they are the borrowed ones. Hand out the fake hundreds. Give them the "bad" news that they are fake - but can keep if they want, or you will "buy" them back for a dollar. OR just do it like Extreme Burn. It's still a great move.