Okay, got mine this morning, 2 days.
At first glance, it's basically a sealed bearing and race with a cushion. The acrylic insert and decal isn't super impressive, but looking it over further, it's a nice design with quality parts. Pricey at $50, but by the time you got the individual parts shipped, it probably would be the same or more expensive.
Then I went to use it.
Preparing for a bunch of adjusting/learning curve, I slipped the blade in the holder, laid it on a piece of tape and spun it counter clockwise. Holy Smokes!
This thing is amazing! I cut a less than 1 mm diameter mask, perfectly round on the first try, without even knowing what I was doing or what to expect. It's the rare tool that not only lives up to expectations, but far outweighs them.
Thanks for the heads up James, this is a valuable addition to my bench and will immediately be a lifesaver of the Star Trek build.