The superfast PCIe 4.0 SSD from Western Digital is one of the best-performing storage solutions on the consumer market, and thanks to a current deal at Best Buy, the 1TB version of the WD Black SN850X has dropped to its lowest price yet.https://www.notebookcheck.net/WD-Black-SN850X-1TB-SSD-now-discounted-by-47.689975.0.html
As long as you've got a unit with proper M2 storage, not soldered...sounds like a great price.
In regards to soldiered on devices like ram and storage.. that's why it always pays to research devices before buying them. On the other hand if your comfortable with limiting yourself to what the manufacturer gives you permanently, by all means. Moral of the story.. research, research.
The problem for manufacturers is that in 2023 no one needs a 1TB SSD, everyone wants cheap 2-4TB to install in laptops. Therefore, 1TB of garbage is drained at a discount. And no one remembers about 256-512 for a long time, so they are forcibly sold to clients in all sorts of junk laptops.
I got mine a few weeks ago on Amazon with a heatsink included for $109