Seller accepted $45 + FS for one set. May go little lower if you are buying multiple. UPS lost my package and seller quickly sent me replacement. Posts in my rack are 28+ apart. SC216 comes out all the way forward.
They have 130+ in stock.
SuperMicro Super Server 2U 3U 4U Rapid Sliding Rail Kit CSE-828 8026B | eBay
They have 130+ in stock.
SuperMicro Super Server 2U 3U 4U Rapid Sliding Rail Kit CSE-828 8026B | eBay