Saw this when I was looking around for a new L2ARC drive. Looks like a great deal to me. The writes are slow for the drive, but reads are as expected.
Micron 1.4TB PCIe SSD Solid State Drive MTFDGAR1T4MAX P420m RealSSD Hard Drive | eBay
Micron 1.4TB PCIe SSD Solid State Drive MTFDGAR1T4MAX P420m RealSSD Hard Drive | eBay