Your search for "fpr2k-nm-6x1sx-f" revealed the following:
NEW Cisco FPR2K-NM-6X1SX-F FirePower 6x 1G SFP Fiber (FTW) Firewall Module
SKU: NSN-7623
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco FPR2K-NM-6X1SX-F FirePower 6x 1G SFP Fiber (FTW) Firewall Module
SKU: NSB-5666
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days