Not the lowest it has been, but still a good price. Reputable seller that I've bought from before.
4U Supermicro Storage Expander 3.5" 45 Bay Server JBOD CSE-PTJBOD-CB2 | eBay
4U Supermicro Storage Expander 3.5" 45 Bay Server JBOD CSE-PTJBOD-CB2 | eBay