Whats the MOSt $$$ you paid for gas in the USA?

A few months ago I saw 87 for $4.87 on 535 near disney.

I passed. 5 miles later it was a dollar less.

Back in the 80's, there was a place in Ohio that had 8/10 of a cent pricing for a while as a promo.

Good for a WTF, but didn't last long or do anything.