Not quite that level, but you can get 8TB nvmes. You'll pay $500 a pop though...[0]. Weirdly that's the cheapest NewEgg lists for anything above 8TB and even SSDs are more expensive. It's a gen4 PCIe M.2 but a SATA SSD is more? It's better going the next bracket down but still surprising to me that the cheapest 4TB SSD is just $20 cheaper than the cheapest NVMe[1] (a little more and you're getting recognizable names too!)
It kinda sucks that things have flatlined a bit, but still cool that a lot of this has become way cheaper. I think the NVMes at these prices and sizes really makes caching a reasonable thing to do for consumer grade storage
[0] https://www.newegg.com/western-digital-8tb-black/p/N82E16820...
[1] https://www.newegg.com/p/pl?N=100011693%20600551612&Order=1
In terms of production, SSD flash chips that go into SATA and NVMe drives can be pretty much the same: only the external interface can be different.
The biggest cost driver for flash chips is not the speed they can be read from and written to in bursts, but how resilient they are (how many times can they be written over) and sustained speed (both based on the tech in use, TLC, SLC, MLC, 3D NAND, wear levelling logic...): even for SATA speeds, you need the very best for sustained throughput.
Still, SATA SSDs make sense since they can use the full SATA bandwidth and have low latency compared to HDDs.
So the (lack of) price difference is not really surprising.
If your budget allows it you can get 120TB .5 dwdp ssd like that drive http://www.atic.ca/index.php?page=details&psku=319207
> Weirdly that's the cheapest NewEgg lists for anything above 8TB and even SSDs are more expensive.
Please don't perpetuate the weird misconception that "SSD" refers specifically to SATA SSDs and that NVMe SSDs aren't SSDs.