I did not see the price until now! Thanks!
On the Magneto X they have adapter boards to use ordinary stepper drivers on the MCUs.
As this is a normal board I assume the magic happens inside the box and is translated into ordinary step/dir commands.
But if you can put together multiple rails and only use a single box that might be nice!
Be aware that you will need at least two kits for a printer (for X and Y). I suppose you can get away with some of the components of a kit, that’s why the article says contact Peopoly if you want to purchase 2 of these to replace your current XY.