The ethanol free small engine fuel available to me is sold in gallon cans for about $20 dollars. It's four stroke specific, it has no oil mixed with it. I don't believe it contains a stabilizer, it's custom blended using hydrocarbons that don't need stabilizers. It doesn't even have the familiar gasoline smell, instead, smelling a lot like camping cooking and lantern fuel, or lighter fluid.
I love the stuff, my mower starts first pull even when sitting for a year with the gas in the tank. I'll gladly pay the price in order to not have to overhaul the carb every other time I use the mower.
It's also not legal for road use, mostly because the price doesn't include a road use tax.
My mower doesn't have a manual choke, instead, it has a linkage that chokes the engine when the throttle is full forward, you pull the throttle back a little to take the choke off. I have considered modifying it to be independent of the throttle lever, a separate control, but laziness has prevented me from doing this so far.