I guess it is location matters when it comes to glow fuel costs. Here in Texas in the Dallas Fort Worth Metroplex area the glow fuel costs are quite reasonable. The prices have gone up a little since this pic was taken maybe $1.25 US or so. This is for 0%, 5%, 10% and 15% glow fuel. But we still have some hobby shops that charge much higher prices though. Plus some areas in the US the LHS charge more for glow fuel than Garthwood has to pay in Canada too.
So where the glow fuel costs are less, then using gasoline as a fuel is less important. But in a locale where glow fuel costs are high, then using gasoline as a fuel become a lot more attractive. The trick is gasoline might be cheaper, but the high quality oil you use to mix with it can be very expensive still.So one needs to factor in the oil in the fuel costs as well. But they are slowly making smaller and smaller gasoline spark ignition engines, the 8cc and 15cc engines are coming out soon. But 17cc, 18cc and 20cc engines are out there at this time. Where they have more or less converted a glow engine into a gasoline engine, you need to be careful and all of these are using a bushed connecting rod and it needs a lot more oil to keep it lubricated. The industrial or utlitlity style of gasoline engines generally use needle bearings on the connecting rod so that they can run with less oil mixed with the fuel.
