Anyone with enough money who had the intellectual honesty to want to either know if Baha'u'llah was truly a Manifestation of the all-Knowing or prove it to others would.
It is a sign of subconsciously not wanting to know the truth that leads one to shirk there responsibility to it.
There is nothing dishonest about transmuting elements.
You are not putting 2+2 together to get 4, Baha'u'llah claimed to reveal the will of God and said all you have to do is ask it of God, Baha'u'llah has already provided the answer for those who seek it. He said, 'consider the substance of copper. Were it to be protected in its own mine from becoming solidified, it would, within the space of seventy years, attain to the state of gold.'
Source:
Bahá'í Reference Library - The Kitáb-i-Íqán, Pages 121-160
So it is no longer a secret, all a person has to do is keep a small amount of copper molten in its mine molten for seventy years. Its not rocket science.
But it is ok, I understand, you dont want Baha'u'llah proven to be a fraud as you do not care for the truth.
In my opinion.