Your search for "AIR-CT2504" revealed the following:
Cisco AIR-CT2504-25-K9 2500 Series 25 Node Wireless Lan Controller
SKU: NSH-1378
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 166.99
• Only 1 remaining
Call if you need more
Cisco AIR-CT2504-5-K9 2500 Series 5 Node Wireless Lan Controller
SKU: NSH-1376
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 102.99
• Only 2 remaining
Call if you need more
Cisco AIR-CT2504-RMNT 2500 Series Wireless Controller Rack Mount Kit
SKU: NSH-3280
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 39.99
• Only 2 remaining
Call if you need more
Cisco AIR-CT2504-15-K9 2500 Series 15 Node Wireless Lan Controller
SKU: NSH-1377
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco AIR-CT2504-25-K9 2500 Series Wireless Lan Controller for 25x Nodes
SKU: NSN-7702
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco AIR-CT2504-75-K9 Wireless Lan Controller for up to 75x Access Points
SKU: NSB-2899
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco AIR-CT2504-50-K9 2500 Series Wireless Lan Controller for 50 Access Points
SKU: NSH-1379
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco AIR-CT2504-5-K9 2500 Series Wireless LAN Controller
SKU: NSN-1165
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco AIR-CT2504-15-K9 Wireless Lan Controller for 15x Access Points
SKU: NSN-7715
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco AIR-CT2504-RMNT 2500 Series Wireless Controller Rack Mounts
SKU: NSN-7124
Condition: New
Shipping: Overnight Options
Warranty: 365 days