Another thing that has been mentioned, but worth reiterating. Older Gan puzzles drop in price over time. The
Gan X v2 costs $30, while when it was released, it cost $50 (according to
this Cubicle video). So you can get the same cube for $20 less, and it's still a really good cube that won't slow you down.
What happens is that cubes go down in price over time because they lose the "this is new" factor. If you wait for a bit, you can still get a really good flagship cube for less. So buy new Gan cubes, as it makes the ones that are (basically) equally as good more accessable for everyone else, and you help drive innovation. I'm not gonna join you and you shouldn't really either, but again, I'm not your dad - do what you want.