Haven't seen these under $250 in a while but seller has 2X @ $200:
Supermicro BPN-SAS2-846EL1, REV 1.11 | eBay
Supermicro BPN-SAS2-846EL1 | eBay
That's a good deal by modern standards
Supermicro BPN-SAS2-846EL1, REV 1.11 | eBay
Supermicro BPN-SAS2-846EL1 | eBay
That's a good deal by modern standards