Thanks for the info kco. Very much appreciated. The PM suggestion was only because I thought you may not want to publicly post prices, since the salesman was a neighbour.
The fan size is important to me since that dictates the volume of snow the blower can process and how far it throws it. The distance is only important if there is some minimum that a person needs to throw the snow. For me that is about 20 FT, 30 would be better. I just need to get it across the driveway from one side to the other and the bottom part of my shared driveway, with the neigbour is quite wide. The important part for me is the combination of diameter and depth because that determines the volume. The higher the volume the faster I can travel. I've noticed that some manufacturers indicate the housing size and some indicate the fan size, which makes it hard to compare blowers. Are the dimensions you provided the size of the fan or the size of the housing it rides in?
My driveway is 1.5 Km long and I expect it would take 4 passes to do it completely. So a total travel distance of 6 KM. With my current blower and my previous tractor is would typically take 2 hours to make one pass down and one pass back up on the other side. However,when I was doing this, I was blowing snow that was plowed to the side as many times as possible before having to blow it. Which meant it was very compacted. Not the same as blowing freshly fallen snow. I would prefer not to have to spend that much time blowing snow, every time it snows and my thinking is that with the inverted blower you are committed to blowing every snow fall. Correct me if that is wrong.
It's odd that when blowing that deep snow, in the pics above, the blower was working well and would throw the snow about 30', if I didn't push it too much. It was still a very slow travel speed but that is to be expected when trying to move that much volume with a small fan. I didn't run out of HP but had to slow down to let the blower catch up. Today was a nice day and I managed to do about half of the blowing using the mirrors. My 66 year old neck appreciated that after 3 days of looking over my shoulder.