"ADVICE: is not simple to assemble an c64x, you need a lot of "know how" to choose and install the right components to not rise the temperatures inside the case: it's very easy to damage the keyboard components or other parts if your configuration is not balanced or able to dissipate the internal temperatures"
Product appears to be either just a case or perhaps dis-assembled. And if dis-assembled I am not sure that the keyboard comes with any components.
Per your post: " I would like a moden keyboard, but seems good?"
It may be "good" but it may not be what you want or expect.
Google "computer keyboard reviews" and limit the search to the last year or so.