The 1TB drive is 4 lanes.
Price is besides the point, since the argument was they couldn't be purchased afterwards.
I am not buying some hardware that isn't directly from a known manufactur
Do Toshiba offer an upgrade service? Do Acer, or Samsung? Does ANY laptop maker offer an upgrade service? No. You buy a product specced as you want and can pay for, and that's it.
Do they sell their laptops with proprietary SSD's ? No you don't. Most don't solider on the SSD's either though I believe a few have.