"See how you go doing asset transfer of $500,000 value using cash"
I never suggested that transactions should or can always be made in cash. Obviously $500,000 is not a reasonable cash proposition and would not be being made for much other than a big drug deal.
I see you have no argument about the $50,000 one. By the way it was a private deal when I was buying a campervan privately from someone I didn't know, he didn't know me and we both travelled 200Ks plus to make the exchange. (on a weekend when banks were closed).
