Looks like 2011 boards are finally coming to a reasonable price. May be due to the fact that this is Supermicro proprietary MB format and requires the Riser cards
Supermicro Intel C602 Dual LGA2011 System Board w/ Heatsink X9DRW-IF | eBay
Supermicro Intel C602 Dual LGA2011 System Board w/ Heatsink X9DRW-IF | eBay