Do you want a drive for internal use (NVMe SSD) or external?
The internal SSDs are expensive as they require a heatsink.
This is the cheapest with a heatsink: WD_BLACK SN850 1TB M.2 2280 PCIe Gen4 NVMe Gaming SSD with Heatsink - Works with PlayStation 5 up to 7000 MB/s read speed however slowest speed is 5300MBs.
An M.2 SSD is a solid-state drive with a connector that allows it to be mounted on the motherboard. The M.2 connector is slowly replacing the commonly used SATA 3 interface. This is due to its higher bandwidth, excellent speed, longer life, and ease of repair. I took my SSD to the guys at salvagedata.com for repair once, and they told me it was one of those models that is a pleasure to work with. Top 3 best M.2 SSD drives for PC and laptop Samsung MZ-V7S500BW, ADATA XPG GAMMIX S11 Pro 512GB, Samsung MZ-V7S1T0BW