Edit: I'm back. It's "The Right It" https://www.albertosavoia.com/therightit.html https://www.albertosavoia.com/therightit.html Essentially the observation was

Edit: I'm back. It's "The Right It" https://www.albertosavoia.com/therightit.html https://www.albertosavoia.com/therightit.html Essentially the observation was the same. A person claiming they'd buy something is worthless information. He had some strategies for getting around it that I've long since forgotten. It's apparently not on archive.org yet. I just dropped my copy into my next donation box. It'll be there eventually now. The term he used was "pretotyping" that term will probably yield everything you need.