Re: specify parts like on laptops
"sealed tin"
I have a Lenovo business laptop of the Win 7 era that is just about as upgradeable as they come. I bought it *used* for about $300 plus shipping. It's really nice in its way.
I have an Asus laptop of the Win 8.1 era that is a sealed unit, and there's nothing that can be upgraded or even easily changed. I bought it *brand new* for $189 with free shipping. It's really nice in its way.
Pros and cons, especially price.
No excuse for expensive laptops that are sealed up, looking at Apple here.