Too often, getting a low-cost 3D printer means getting a box of ill-fitted parts with poorly written and incomplete documentation. You end up spending hours on the internet, searching forums and asking for help to get the printer assembled and operating properly.
That isn't how Monoprice operates. Printers can easily be up and running in under 15 minutes, it they've already been calibrated at the factory. All you have to do is perform a quick check to verify that the print bed is still leveled, in case it shifted during shipping, then load the included SD™ card, load some filament, and start printing the preloaded model. Nowhere else will you find a 3D printer ready to print out of the box at such a low price!