by bmat » Mar 1st, '11, 18:51
I can't find you in the introductions which does pose a problem to answer your question. What I think of the effect does not matter. Have you seen the effect, if so you already know if you like it or not.
Should you buy it depends on your level of experience in magic. What and where your venue for performing is. What is your expectation of the effect?
If you are thinking you can just go into the street, punch somebody in the stomach and have your fist go through them, then I suggest you learn a little more about how magic works.
Without knowing anything about you it would be impossible to answer your question.