Your search for "mx250-hw" revealed the following:
Third Party for Cisco Meraki MA-SFP-10GB-LR 10GB BASE-LR 1310nm SMF SFP+
SKU: NSB-1189
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 889.99
• Only 2 remaining
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NEW Third Party for Cisco Meraki MA-SFP-10GB-LR 10GB BASE-LR 1310nm SMF SFP+
SKU: NSN-0710
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 928.99
• Only 2 remaining
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Advantage Optics Cisco Meraki Compatible MA-SFP-10GB-SR 10GB SFP+ Transceiver
SKU: NSB-3812
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 12.99
• 296 in stock
Call if you need more
NEW Cisco Meraki MA-SFP-10GB-LR 10GB BASE-LR 1310nm SMF SFP+ Transceiver
SKU: NSN-8805
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 928.99
• Only 2 remaining
Call if you need more
Cisco Meraki MX450-HW 10 Gbps 10x 10GB SFP+ 8x SFP 8x RJ45 Unclaimed Firewall
SKU: NSH-9928
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco Meraki MA-FAN-18K F-B Fan Module for MX105, MX250, MX450 Firewalls
SKU: NSN-5504
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco Meraki MA-CBL-TA-3M 3m 10GB SFP+ Direct Attach Copper Cable
SKU: NSN-8325
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco Meraki MA-FAN-18K F-B Fan Module for MS350 MS355 MS425 and MS450
SKU: NSN-6118
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco Meraki MA-CBL-TA-3M 3m 10GB SFP+ Direct Attach Copper Cable
SKU: NSB-0849
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days