Your search for "C6880-X-3KW" revealed the following:
Cisco C6880-X-3KW-AC Catalyst 6800X Series 3000W AC Switch Power Supply
SKU: NSH-3130
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 69.99
• Only 2 remaining
Call if you need more
NEW Cisco C6880-X-3KW-AC Catalyst 6800X Series 3000W AC Switch Power Supply
SKU: NSN-2047
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco C6880-X-3KW-DC Catalyst 6800X Series 3000W DC Power Supply Switch
SKU: NSN-2993
Condition: New
Shipping: Overnight Options
Warranty: 365 days