Thank you for your feedback!
A question if genuine curiosity though... What makes the change merely "okay"? It's easy, very visual, justified, and magical-looking, what is it missing that makes it so weak to you? Thank you for your response!
It's no more visual than the Erdnase change. A 'visual' change is one where you see the change occur, like the Cardini, Bertram, Snap or Revolver changes. As in, at no point is the face of the card hidden. In this change the card is bent upwards so you can't see the face, then when it comes back down and has changed. That's just a change, not a visual change.
What makes it justified? What justifies putting the card in the middle of the deck? Sure, I can come up with one, but that means the move itself isn't justified on its own.
Magical-looking? That's down to the performer. I didn't think it looked magical, I thought it looked like sleight of hand. A 'magical' looking change would be holding the card face out at fingertips and having it change right there. Which I thought of as an impossible thing, but I guess the Snap change does pretty much just that.
I have no idea how difficult it is, so I can't comment on that.
Now, all of these points may be covered by the eBook itself, but I have no way of knowing that from the ad. Which is what makes it a bad ad, other than the fact that having any form of political content skews it into being a political commentary. The ad makes the change out to be some groundbreaking thing, and then shows it and it's like, "Meh. That's not so great." Also, it bugs the crap out of me to watch a minute's worth of "ZOMG THIS IS SO AWESOME" just to see 3 seconds of the actual product. It should take no more than 20 seconds to get to the point.
Last of all, and this is just my thing, I don't like eBooks. If I'm reading something, I want a hard copy. Reading on a computer screen is annoying.
To wrap it up, though, I don't think it's a 'weak' change. I just think it isn't anything terribly new or amazing, and the ad saying it is annoys me to the point of not wanting it. Then to see it's more expensive than other changes which are better for my style and preferences, well that's just the nail in the coffin so to speak.