the AGBAY cake leveler looks like a smart piece of equipment made by someone who understands cake.
It certainly may be beneficial to the Commercial or Home Business, as well as a hobby baker. Folks spend their 'disposable income' in a multitude of interesting ways. Spend your $$ however you want. As a Hobby Baker I'd rather buy another set of fondant cutter-plunders, or a new silicone mold, or a cookie stencil than buy a new pair of shoes. But then, I'm in Alaska.