They are though. This is a 2.4GB/s drive for £220. A 3.5GB/s NVME drive is £110, half the price.
A 5GB/s PCIe 4.0 NVME drive is £170.
This is a slow, low end drive that's priced higher than the fastest NVME drives on the market. Its blatant price gouging, nothing more, nothing less.
I swear you come into all the Series SSD threads and spew the same stuff. You need to realize you are partially paying for speed but also for form factor. This was made to fit inside the console easily and with that design in mind. Not to mention it needs to fit to be cooled properly with in the cooling systems. Similar form factor drives for video equipment with less speed are 2x the price if not more. I'm not justifing the price, I'm just saying it's more than just speed, speed, speed.