Your search for "ISR4221" revealed the following:
NEW Cisco ISR4221-SEC/K9 ISR 4000 Series 4221 Security Router
SKU: NSN-0625
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 531.99
• 6 in stock
Call if you need more
Cisco ISR4221-SEC/K9 ISR 4000 Series 4221 Security Router
SKU: NSH-6268
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 166.99
• 13 in stock
Call if you need more
Cisco ISR4221/K9 1x 1GB RJ45 1x 1GB Combo 2x NIM Slot 1x ISC Slot Router
SKU: NSH-6267
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 139.99
• 16 in stock
Call if you need more
NEW Cisco ISR4221/K9 1x 1GB RJ45 1x 1GB Combo 2x NIM Slot 1x ISC Slot Router
SKU: NSN-3167
Condition: New
Shipping: Overnight Options
Warranty: 365 days