Your search for "ISR4321" revealed the following:
Cisco ISR4321-VSEC/K9 Integrated Services 4321 Voice Security Router
SKU: NSH-5567
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 337.99
• Only 2 remaining
Call if you need more
Cisco PWR-4320-POE-AC 341-0703-01 AC Power Supply for 4321 ISR Router
SKU: NSH-8847
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 202.99
• 5 in stock
Call if you need more
NEW Cisco ISR4321-VSEC/K9 Integrated Services 4321 Voice Security Router
SKU: NSN-2308
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco ISR4321-AXV/K9 ISR 4321 AXV Router
SKU: NSN-0619
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco PWR-4320-POE-AC AC Power Supply for 4321 ISR Router
SKU: NSN-5964
Condition: New
Shipping: Overnight Options
Warranty: 365 days