The brown truck comes by my house every day. I don't even have to leave the house to order or pick up the product.
Don't think in terms of octane boost. There is more to it than that. For a fuel to be sold publically at the pump (even clear fuel) it has to have detergents, stabilizers and other crap in it that race fuels don't. There are also 3-4 (maybe 1-2 more depending on region) blends that are seasonal. Winter blend always gets the least fuel mileage because they have to lower the Reid Vapour Pressure so they will start cold and run in cold weather. That same fuel in the summer will boil in the bowls and even in the injectors.
You need to condition the fuel to make all the additives consumable. Most octane boosters don't do that.
As far as cost if you use a fuel conditioner you don't have to buy clear fuel. Right now (over hear) 92 pump gas is about 3.15 a gallon. I can't remember off the top of my head exact costs, but it seems to me I'm around 6 bucks a gallon at the most using Torco. I carry a ratio rite (I know you have one because is suspect your snowmobiles are two strokes) and two cans of Torco in the trunk. When I add pump fuel I grab the ratio rite and add the appropriate number of ounces of Torco and dump it in the tank and off I go.
The hard part is I don't always use it so I have to guesstimate how many ounces I need on the first tank after not using it for awhile.
