For eBay, I just search "1u server" or a specific make/model ("dell r720") then filter down from there. Once you find a combo that works, then search by that sp

For eBay, I just search "1u server" or a specific make/model ("dell r720") then filter down from there. Once you find a combo that works, then search by that specific model or view the seller's other listings. Many times they'll have pallets full of each type of server and may be willing to offer volume discounts.