Why are speaker stands so expensive?!

I got those Monoprice stands, and two of the holes did not line up between the platform and the base, so I could only screw in 2 of the 4 screws. I read other reviewers on Amazon saying the same thing. Still works, though. For some speakers, the stands, though extra, are still considered an integral part of the speaker, though for some, the stands are included in the price, like Dynaudio Confidence 20.... 

On the Monoprice stands that the screws don't align, make sure you have the top plate on correctly.  Turn it 90 degrees and the holes should line up.

I made that mistake on my first pair.  The top plate runs in line with the bottom plate, not across.

I used to put my Quad ESLs (aka "57"s) on cinder blocks. Perfect height and you can paint them any color you like. If you have a hammer drill and masonry bit you can fit them with spikes too. 

After that, I bought some solid 1" x 1" square steel and had it welded into some custom stands by a local welder working out of his garage. The problem is that paying for steel and cutting, welders, paint,... it all adds up and it was just a little more expensive to buy the audiophile stands. 

Another option is to buy 8" concrete form tubes at your local Home Depot, cut them to the height you want, tape off the bottom really well with plastic, fill them with quickcrete and set your steel spikes sticking out of the top (which will be the bottom). This would be a more acoustically diffusive shape and would not create much diffraction from the speakers. You can wrap them in fabric or carpet, paint them, or whatever you like.  

If you can get your stands used I think that's the best value out there. 

Because someone will pay it.

At the risk of opening myself up to ridicule I bought Rockville stands for my many pairs of bookshelf speakers. They were dirt cheap and doing admirable job after a few cheap modifications. I filled the posts to the top with rice and applied a layer of dynamat to the platforms. Even my bottom ported Sonus Faber sound excellent on them and they are aesthetically decent as well