blog post. He says that the habit of not buying a trick because you reverse engineered it forces magic producers to create misleading/faked videos advertisements.
Well I got a way to work against both... Yes you assume right. This is gonna be a constructive post!
How about offering more than what is shown in the video trailer? Not just a one trick pony, but more. The sample best be something that they can easily figure out. That will be an advantage instead of a drawback. Because they see the effect and see how it works - assuming the sample is something good and usable - they will naturally be curious about the other stuff that isn't shown. And this where the business comes in.
The rest cannot be reverse engineered as it not shown.
There is also the issue of illegal copies that is inevitable when dealing with downloads. But there is a simple solution for that as well. Do not offer it as a download. Seriously. Send the costumer a real DVD.
Although thinking about the last bit. A DVD might also be copied and uploaded to the Internet. All fairly easy.
But you know what is really hard to do. To scan each and every page of a book. And even if somebody did all the work, much fewer would read it, because reading is so hard.
Or to sum up the whole post in just three words: Sell more books!