Yes, it's worth the money. It's not light sensitive. Some tricks are angle sensitive but most aren't. It's very hard to perform this on stage, but you can always to a floating paper rose, and then turn it into a real rose.
Get it, trust me. You're gonna get a lot more than just how to do the trick. You'll also learn thread management, how to make IT dispensers, how to made a homemade thread reel, and much more. Just read one the reviews on this site and you'll get a better description of what i mean.