I used to have a meme on my phone that said “my Glock” with a picture of a potato, and “everyone else’s Glock” with a picture of a fully loaded baked potato, covered in butter, sour cream, chives, cheese, and bacon.
Shoot your potato a few thousand times before you run out and start paying for all sorts of toppings. The grips you want may be awesome, but range time and ammo aren’t free, and are likely the better “upgrade.”
my Glock is still factory stock.