I'll go with 16" as well.Why do you think this is low? You can get a new 16" with the same performance and a better GPU for $800 more (or 30%). I don't think that 70% from the current price is at all a bad deal for a used laptop.
Better speaker.
Better thermal.
Better Keyboard.
Bigger screen.
Better internal components (newer processor and GPU).
5Bs.