It's too generic in terms of it can be so many abstract things that maybe don't even exist yet, and it's also limited to "yelling" at the same time.. almost impossible to give a proper appraisal, but reseller less than $20, end-user if there's such a place to let out your frustration by yelling and they decide to call it a yellzone.. then maybe a few hundred bucks to 1k... but I wouldn't really bet on that happening..

