emachineshop is very exciting to me...
I never had to execute orders for the manufacture of a part through a machine shop before. But, I've dealt with similar-type businesses designing/producing volume items from scratch and the turn around time is forever (which is a good and bad thing; ie. "good" in that you have time to hit the brakes if you discover something you don't like; "bad," in that it can be prohibitively time expensive)
Emachineshop is something that wouldn't have flown as well in the 1990s, where the push was for pure electric commerce. But, when you have a hybrid type business that makes old-school, real-world processes more easily/efficiently performed using a electronic interface with buyers, then its a winner.
The emachineshop people have their own software and have the patents etc, thereby essentially "owning" this type of fast-remote-consumer-design-manufacturing process for the forseeable future.
(You don't need it? ...Hey, I never used to think I'd need say, one of those auction sites, either
You could literally see where the world's machine shop operators kind of turn in to "we sell it for you on Ebay" stores and basically advise customers on what kind of orders they are going to place with Emachineshop. Beat that idea down, if you you want