These seem pretty hard to find. Not cheap but well below the list price.
Selling at $900.
[4 available] Xeon E5-1680v3 OEM 8-Core 3.2GHz SR20H ≈ E5-2667v3, 5060X with ECC
Selling at $900.
[4 available] Xeon E5-1680v3 OEM 8-Core 3.2GHz SR20H ≈ E5-2667v3, 5060X with ECC