Seller accepted my offer for $150. I think motherboard (with SAS3) worths that much in these days.
Supermicro CSE-116 10 Bay 2.5" Unpopulated Chassis w/ X10SRH-CF LGA 2011 | eBay
Supermicro CSE-116 10 Bay 2.5" Unpopulated Chassis w/ X10SRH-CF LGA 2011 | eBay