Seagate 960gb nvme u.2 $287

[Jeggs101]

Listing says only used for 16 days on the nitro xf1440 Seagate Nytro XF1440 SSD ST960KN0001 960GB 2.5" Internal PCIe 3.0 x4 (NVMe) 1TB 763649088326 | eBay

 

[MiniKnight]

Since it's hard to find a second one maybe that's at best a l2arc drive

 

[OBasel]

It's down to $282 now and includes a PCIe to U.2 adapter Seagate Nytro XF1440 SSD ST960KN0001 960GB 2.5" Internal PCIe 3.0 x4 (NVMe) 1TB 763649088326 | eBay