The K8200 is actually based on a reprap called the 3DRAG: reprap.org/wiki/3drag
Here’s the best information i could find about the development process: open-electronics.org/3drag-t … to-reprap/
it seems as though they spent around 2 months developing after examining a mendel for a while, but it’s not entirely clear.
It consists of about 700 parts.
It is sold at a very good price for the quality it delivers, but you can always find lower cost items of course.
It all depends on what you are looking for.