This is life for high end systems though. I have a Dell Lattitude 7390, 8th Gen i5, 256GB SSD and 8GB RAM. Cost about £850 (edu discount). The upgrade to 512GB

This is life for high end systems though. I have a Dell Lattitude 7390, 8th Gen i5, 256GB SSD and 8GB RAM. Cost about £850 (edu discount). The upgrade to 512GB SSD and 16GB RAM would have been an extra £500. Admittedly you also get an i7, but if Dell actually offered 1TB and 32GB RAM, I would bet it'd be at least £1k on top of the base. On the plus side, despite Dell's warning, both the SO-DIMM and the M.2 SSD are user serviceable and easily accessible. The chassis even has retaining screws!