Your search for "ws-c4500x-24x" revealed the following:
Cisco WS-C4500X-24X-ES 24x 10GB SFP+ Front-to-Back Airflow Switch
SKU: NSH-4666
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 159.99
• Only 2 remaining
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NEW Cisco WS-C4500X-24X-ES 24x 10GB SFP+ Front-to-Back Airflow Switch
SKU: NSN-1759
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 857.99
• Only 2 remaining
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Cisco WS-C4500X-24X-IPB 24x 10GB SFP+ Front-to-Back Airflow Switch
SKU: NSH-3139
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 214.99
• Only 2 remaining
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Cisco WS-X4908-10GE Catalyst 4900 8x 10GB X2 Switch Module
SKU: NSH-0773
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 112.99
• Only 2 remaining
Call if you need more
NEW Cisco WS-C4500X-24X-IPB 24x 10GB SFP+ Front-to-Back Airflow Switch
SKU: NSN-1761
Condition: New
Shipping: Overnight Options
Warranty: 365 days