Your search for "NCS-5501-SE" revealed the following:
Cisco NCS-5501-SE NCS 5500 40x 10GB SFP+ 4x 100GB QSFP28 Router Chassis
SKU: NSB-7540
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 5,039.99
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NEW Cisco NCS-5501-SE NCS 5500 40x 10GB SFP+ 4x 100GB QSFP28 Router Chassis
SKU: NSN-9830
Condition: New
Shipping: Overnight Options
Warranty: 365 days