I have a F-250 Super Duty with a 8'6" Western Pro Plow. There is no drop off area to put the snow, however from what I have read the snow is just pushed to the sides of the alley next to the garages and such.
It will probably take me 30 to 35 minutes to complete this. However, I am a newbie at this and am not sure how accurate my time estimate is. I have a lot of heavy equipment experience but am new to the plowing world.
I hate plowing alleys, last time i did it, i got a piece of metal in my tire
so beware of the risks of getting a flat tire and include that in your cost.