[Conrad Hoffman]

The handtruck I could afford, it's the pickup truck to go with it that's beyond my means- local branch of the gas supplier is about 10 miles away from here. They are, however, just close enough and just cheap enough that I don't really mind the more frequent visits with the little tank. I was just surprised that with a minor increase in pressure and volume, you get a significant increase in the amount of oxygen with the big tank, assuming they're widely available.