1.9 USD for ONE liter is cheap over here in Sweden! 98 octane RON E5.
A few years ago up to 2.70 USD when green minded mentally ill people were in charge.
95 RON E10 around 1.8 USD
Why pay for harming the engine with its fuel system?
My car is designed for higher than 95. It takes more fuel with less power if filling it with 95. Total price is more than 98 and less power.
After program upgrade 98 RON minimum. Both bikes gets 98 E5.
My K6 would love 100 RON as they have in Greece.
E10 -15 mix better for me

Here my new fav, Hernö Navy strength 57% (100 proof). Same total strenght when mix with more flavour.
8cl is enough instead of 12cl with the 40% bottles I used before
