Your search for "n3k-c3636c" revealed the following:
Cisco N3K-C3636C-R 36x 100GB QSFP28 Front-to-Back Airflow Switch
SKU: NSH-8358
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 4,382.99
• Only 2 remaining
Call if you need more
Cisco N3K-C3636C-R 36x 100GB QSFP28 Back-to-Front Airflow Switch
SKU: NSH-8374
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 4,382.99
• Only 2 remaining
Call if you need more
NEW Cisco N3K-C3636C-R 36x 100GB QSFP28 Front-to-Back Airflow Switch
SKU: NSN-3564
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3636C-R 36x 100GB QSFP28 Back-to-Front Airflow Switch
SKU: NSN-8260
Condition: New
Shipping: Overnight Options
Warranty: 365 days