Your search for "WS-SUP720" revealed the following:
NEW Cisco WS-SUP720-3BXL 6500/7600 Supervisor 720 Fabric MSFC3 PFC3BXL Module
SKU: NSN-1179
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 194.99
• Only 2 remaining
Call if you need more
Cisco WS-X6716-10G-3CXL 16x 10GB FC X2 Switch Module w/ DFC3CXL
SKU: NSH-2166
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 361.99
• Only 2 remaining
Call if you need more
NEW Cisco WS-X6716-10G-3CXL 16x 10GB FC X2 Switch Module w/ DFC3CXL
SKU: NSN-6244
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 471.99
• Only 2 remaining
Call if you need more