Yes, and plenty of cheap ones, too — you have a pretty good range based on features and looks. This kind of complaint is pretty predictable: most people who want one will drop $100 on a normal VESA stand or arm, but the Apple one is definitely competing with people who either want the matching designer image or simply aren't that price sensitive.

Here's an example of Herman Miller, which is definitely competing for the same kind of buyers with a $450 monitor arm:

https://www.hermanmiller.com/content/dam/hermanmiller/docume...

Now, they do at least discount that a bit so a good question is whether you'll see the Apple ones showing up at less than list price:

https://store.hermanmiller.com/office-furniture-desk-accesso...

Personally, I prefer desk arms. They're easily portable to other locations, and give you a huge amount of flexibility for positioning your monitor exactly where you want it.

The free desk space below the monitor is just icing on the cake.

I prefer to put my monitor on top of my $500 hardcover set of TAOCP.

Not sure about expensive but I do know there are a lot of cheap ones that you should be careful of, some say “height adjustable” but have a screw and hooks that you manually have to move. That could mean a monitor could get dropped or someone pinched during adjustment.

I use the Knoll Sapper arms. They are fully articulated and rotatable. You can get them on eBay for not much if you lurk.

A proprietary tilt and height adjustable stand is usually included in the price…

My kanto dms2000 is my favorite thing on my desk.

I can recommend the Ergotron monitor arms.