Nokoni said:
... does anyone know how much gas these things use? like in an hour would i use one gallon of gas? i'd like to get some idea.
I'd guess, based upon my gas-powered string-trimmer/sidewalk-edger tool, that you'll use around a pint of gas in an hour. It depends somewhat on the cc's of the engine, but it certainly won't break the bank even if gas is $4/gallon.
You will likely need to mix 2-stroke oil with the gas. Mixing a gallon at a time is typical, and that will likely be too much to use in one year if you only have one tool and that tool is a leaf blower. You can probably mix 1/2 gallon at a time and be good for the Fall leaf season, depending on your frequency of usage with your stated yard size. It's best to use mixed gas/oil within a year if you can. A lot of the 2-stroke oil now comes with gas stabilizer and I've used a gallon over 2 summers, but others typically prefer not to use gas/oil mixtures that get over a year old.
Be-Green's situation with a path, and my situation with flower beds and driveway borders, makes a blower effective there, but it can be hard to justify buying one for special applications. Borrowing is a great option if you know someone.
Personally, for the bigger portions of my yard (110' x 110' including house, 3-car wide driveway, and a couple huge flower beds) where the grass grows, I find it to be actually faster and less frustrating to rake leaves into piles, then onto a tarp, and drag them out back. I was quite surprised to find it easier, and significantly faster, than the electric blower. This is especially true if you have leaves that work themselves down into your grass and get stuck to the soil. I don't think a gas blower would save much time, but it would untether me from the power cord, which is a big frustration for me with lots of garden obstacles.
I got lucky and was given a nice Craftsman lawn tractor with bagger attachment for helping someone move where they had no more use for it. This free lawn mower has made my life much easier during its first Fall leaf season. I've even sucked up leaves off the boulevards of both my neighbors twice this Fall to share my new-found lawn tool wealth. Can't beat a rider for sucking up leaves. I'm in leaf heaven.