Your search for "PWR-C3-750WAC" revealed the following:

Cisco PWR-C3-750WAC-R Catalyst 3850 750W AC F-B Airflow Switch Power Supply

SKU: NSH-5950
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco PWR-C3-750WAC-R Catalyst 3850 750W AC F-B Airflow Switch Power Supply

SKU: NSN-3001
Condition: New
Shipping: Overnight Options
Warranty: 365 days