Your search for "c3650-stack-kit" revealed the following:
Cisco C3650-STACK-KIT Catalyst 3650 Series StackWise 160 Switch Stack Kit
SKU: NSH-4791
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 105.99
• Only 2 remaining
Call if you need more
Cisco PWR-C1-715WAC 715W AC Power Supply for Catalyst 9300, 3850, 3650
SKU: NSB-3625
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 367.99
• Only 1 remaining
Call if you need more
NEW Cisco PWR-C1-1100WAC 1100W AC Power Supply for Catalyst 9300, 3850, 3650
SKU: NSN-4094
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 277.99
• Only 2 remaining
Call if you need more
NEW Cisco C3650-STACK-KIT Catalyst 3650 Series StackWise 160 Stack Kit
SKU: NSN-3215
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco PWR-C1-715WAC 715W AC Power Supply for Catalyst 9300, 3850, 3650
SKU: NSN-4095
Condition: New
Shipping: Overnight Options
Warranty: 365 days