Based on your reply, you haven't read the articles I provided links to, at least not yet. Please do. At no point did I say UBI was free. I explained how it costs a lot less than you obviously seem to think it does. I also linked to what I consider to be the optimal way of going about funding it, which does not involve tax rates on the rich that you appear to be concerned about. And I also included how it should grow as productivity grows, and how to potentially go about that.

You may also find it informative to go through my UBI FAQ.