Your search for "WS-C4500X-16SFP+" revealed the following:
NEW Cisco WS-C4500X-16SFP+ 16x 10GB SFP+ Front-to-Back Airflow IP Base Switch
SKU: NSN-1758
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 254.99
• Only 2 remaining
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Cisco WS-C4500X-16SFP+ 16x 10GB SFP+ Front-to-Back Airflow Switch
SKU: NSH-2879
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 149.99
• Only 2 remaining
Call if you need more
NEW Cisco WS-C4500X-F-16SFP+ 16x 10GB SFP+ Back-to-Front Airflow Switch
SKU: NSN-2443
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco WS-C4500X-F-16SFP+ 16x 10GB SFP+ Back-to-Front Airflow Switch
SKU: NSH-4669
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days