[OneWingedShark]

Good luck trying to get paid in precious metals. There are places these days that don’t even accept cash regardless of the “This note is legal tender for all debts public and private” printed on it.

Offer in cash, when they say they won't take it, get it in writing, signed by a manager or somesuch (bonus points if you bring a notary), then walk away.

If/when they bring it up in court produce your document, claim that because they refused payment (as documented) you considered it a gift.

[Proud2BeRight]

I like your idea. Interestingly, the example I was thinking about is trying to purchase a meal with cash on a flight.