95 RON (our "standard premium") is equal to US$6.32 per US Gallon. (Nationwide reported average).
We have 98 RON too - one place in my town has it, but it's E10... the ONLY Ethanol fuel on any kind here. It's also at a gas station where I fear for my life, wallet, car and sexual health (you could catch ANYTHING off those pumps!).
Out of my town (min 1.5 hours), there is "real" 98 RON, but I only fill up with that occasionally, because the extra torque is creates in the R32ran gives me FOMO, because I can't have it all the time.
We used to have our own refinery here, until a couple of years ago. It's close enough, that if it went off, my windows would have blown out

We still paid more than other locations though! Now, the ex-refinery just imports pre-made fuel.
A lot of tax is on our fuel. Diesel is cheaper, and has less tax, but you pay a tax based on the kms travelled. They are talking baout that for petrol cars too. I'd like that: Pay less for the fuel, but pay per km. Then cars with higher consumption become, relatively, cheaper to fuel. Handy for familes who need to fit everyone in.