MyDigitalDiscount via Amazon offers the Samsung PM961 1TB M.2 PCI Express 3.0 x 4 OEM NVMe Internal SSD for $402.30. Coupon code "SD1TB13P" cuts that to $350. With free shipping, that's $52 off and the best price we could find. It features read speeds up to 3000MB/s and write speeds up to 1150MB/s.