Your search for "C6816-X" revealed the following:
Cisco C6816-X-LE Catalyst 6800X Series 16x 10GB SFP+ Switch
SKU: NSB-3361
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 233.99
• Only 2 remaining
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NEW Cisco C6816-X-LE Catalyst 6800X 16x 10GB SFP+ Switch
SKU: NSN-7736
Condition: New
Shipping: Overnight Options
Warranty: 365 days