Amazon with ADATA has the ADATA Legend 840 1TB PCIe Gen4 x4 NVMe 1.4 M.2 Internal Gaming Solid State Drive (ALEG-840-1TCS) for $110 - $20 off coupon (click "Save with Coupon") = $90 with free shipping. Has read/write speeds of 5000/4500 MB/s.