If you remember it, what’s the lowest price you’ve ever paid for a gallon of gasoline?

18 cents a gallon I think. 

75 cents. 
Once. 

When I started driving gas was $0.99- $1.09 per gallon.

18 cents.

It was $0.989/gallon.  That was in 2020 in the middle of the COVID lockdowns.

95¢

The lowest price Ive ever PAID was $1.69.

I remember it being .54 (at the Gulf station)

$.28/gal

I've never bought it by the gallon. I do remember when it was 40c per litre.

The lowest I remember paying was when I moved to another part of the country and it was $.89/gallon. I remember it being just under $1.00 before that, but never in the 80-cent range. 

I remember gasoline was about ARS 1,70 per litre when I had my first car in 2006.  The cheapest gasoline I saw this week was ARS 109,90 per litre.

ARS 1,70 per litre in 2006 was equal to USD 1,62 per gallon.

ARS 109,90 per litre today is equal to USD 3,71 per gallon.

What is a gallon in Canadian language?