I'm not real familiar with Mcor's technology, but they claim the results are like wood, which seems like it would be good enough for a lot of the use-cases people are using PLA and the like for.
But more than that, sometimes you just want to bring your 2D printed page to life for presentations and things of that nature. Paper-printed 3D models would be perfect for that. Given Staples' primary audience, I would assume this it he market they are really going after.
Especially for things that you kind of need to touch. If you are designing something physical it could be a cheap alternative to whatever the current mockup methods are.
But more than that, sometimes you just want to bring your 2D printed page to life for presentations and things of that nature. Paper-printed 3D models would be perfect for that. Given Staples' primary audience, I would assume this it he market they are really going after.