Your search for "ISR1100-4G" revealed the following:
Cisco ISR1100X-4G ISR 1000 Series 4x 1 Gigabit RJ-45 Router
SKU: NSB-1185
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 489.99
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Cisco ISR1100-4G ISR 1000 Series 4x 1 Gigabit RJ45 Router
SKU: NSB-1188
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco ISR1100-4G ISR 1000 Series 4x 1 Gigabit RJ45 Router
SKU: NSN-4774
Condition: New
Shipping: Overnight Options
Warranty: 365 days