You’re looking at spending USD $2500 which is quite a lot.
Building your own is a much better option and you can make a VERY good PC for that budget. I understand though that it’s not easy to research this stuff if you are not familiar. Maybe if your son likes gaming offer to let him research and pick his own parts and you will pay for it? It will also make it feel like it’s truly his own.
You’re looking at spending USD $2500 which is quite a lot.
Building your own is a much better option and you can make a VERY good PC for that budget. I understand though that it’s not easy to research this stuff if you are not familiar. Maybe if your son likes gaming offer to let him research and pick his own parts and you will pay for it? It will also make it feel like it’s truly his own.