There are a number of issues with this trick that make it not worth the time or money imo. The first
would be the fact that the vanish is NOT practical for most environments, if it works at all. I
perform professionally (over 300 shows a year) and would not attempt this in 90% or more of the
venues I perform in due to the nature of the vanish. And there are times when you will get caught.
This is mentioned in the video, and it's a major drawback.
Second, the reactions of this
are nowhere near the level of sponge balls and for anyone to even compare the two is silly. Sponges
are larger. They lend themselves to multiple phases and a climax. And the sponge rabbits are
adorable - rubberbands are not. This trick is just a quicky that gets a moderate reaction, even if
you pull off the impractical vanish. Spend your time and money elsewhere.