I use a power miter saw with a thin curf 60 or 80 tooth carbide. I set the shaft in a cradle made from a piece of hard wood (just a piece of 1"x1" with the corner cutout so it looks like an L). Set the shaft in the cut out and cut both. Clean and square. You can setup up a stop if you have to to make sure they are all exactly the same length, but I have no problem doing it with out besides I pull the shaft away before letting the blade come back up to prevent the blade from touching the shaft again. You can also use a 7 1/4 40T thin curf blade and lift the block up. I use all fraud blades. The 7 1/4 blades are less than 20 bucks and cut very smooth. The others are much more and not needed unless you need them. The blades that come with the saw won't work, to rough a cut. You won't loose any money buying a good one.

You can then use the saw around the house or in my case to make a living. There's no reason those shaft saws should cost so much.