I think these are the Samsung XS1715 400GB Dell drives.
Here's one at $280 obo DELL 400GB PCIe Gen 3 NVMe SSD MZWEI400HAGM - NYF0Y W/Tray | eBay
Here's six at $285 obo Dell 400gb NVMe SSD in tray NYF0Y | eBay
The other one that has me really intrigued is the 1.6TB versions of these drives at $895 obo that's not much more than a 800GB version Dell 1.6TB NVMe MLC PCI SSD 2.5in - 4WNJN
Better cost per GB and bigger drives are better but if you've got a sub $600 budget it doesn't help you
Here's one at $280 obo DELL 400GB PCIe Gen 3 NVMe SSD MZWEI400HAGM - NYF0Y W/Tray | eBay
Here's six at $285 obo Dell 400gb NVMe SSD in tray NYF0Y | eBay
The other one that has me really intrigued is the 1.6TB versions of these drives at $895 obo that's not much more than a 800GB version Dell 1.6TB NVMe MLC PCI SSD 2.5in - 4WNJN
Better cost per GB and bigger drives are better but if you've got a sub $600 budget it doesn't help you
