This speedy 4TB Silicon Power XS70 NVMe SSD with heatsink is doen to £215 from Amazon | Eurogamer.net
Amazon.com: Dogfish 4TB M.2 NVMe SSD PCIe 4.0 Gen 4 with Graphene Thermal Pad,Works with PS5, Up to 7300 MB/s Internal Gaming SSD Solid State Drive High Performance Storage for Laptop PCs
Amazon.com: Kingston NV2 4TB M.2 2280 NVMe Internal SSD | PCIe 4.0 Gen 4x4 | Up to 3500 MB/s | SNV2S/4000G : Electronics
Crucial P3 Plus 4TB Internal SSD PCIe Gen 4 x4 NVMe CT4000P3PSSD8 - Best Buy