The only difference between prebuilt and DIY is the lack of OS, memory, and storage. The power brick is also an extra $80 for DIY (pretty good deal for a 180W charger). That makes the base prebuilt be +$200 to give you 16GB ram, 512GB ssd, and windows home. That price is good, but if you instead want 32GB and 1TB, the prebuilt price goes way up and you are better off doing DIY. Standard laptop overcharge for upgrades is in effect.
The only difference between prebuilt and DIY is the lack of OS, memory, and storage. The power brick is also an extra $80 for DIY (pretty good deal for a 180W charger). That makes the base prebuilt be +$200 to give you 16GB ram, 512GB ssd, and windows home. That price is good, but if you instead want 32GB and 1TB, the prebuilt price goes way up and you are better off doing DIY. Standard laptop overcharge for upgrades is in effect.