Your search for "sfp-10g-er" revealed the following:
Juniper EX-SFP-10GE-ER 10GB BASE-ER 1550nm SMF SFP+ Transceiver
SKU: NSH-6968
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 132.99
• Only 2 remaining
Call if you need more
Cisco C3KX-SM-10G Catalyst 3750X 2x 10GB SFP+ Switch Module
SKU: NSH-1224
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 28.99
• Only 2 remaining
Call if you need more
HPE JG234A 10GB BASE-ER LC SMF Optical SFP+ Transceiver
SKU: NSH-4887
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 612.99
• Only 2 remaining
Call if you need more
NEW Dell SFP-10G-ER 6K3Y6 10GB BASE-ER 1550nm SMF LC Transceiver
SKU: NSN-0818
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista SFP-10G-ER 10GB BASE-ER 1550nm SMF LC Optical SFP+ Transceiver
SKU: NSB-5371
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Dell SFP-10G-ER 6K3Y6 10GB BASE-ER 1550nm SMF LC Transceiver
SKU: NSB-5928
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco ONS-SC+-10G-ER 10GB BASE-ER 1550nm SMF LC SFP+ Transceiver
SKU: NSN-2778
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco ONS-SC+-10G-ER 10GB BASE-ER 1550nm SMF LC SFP+ Transceiver
SKU: NSH-7582
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper SFPP-10GE-ER 10GB BASE-ER LC 1550nm SMF LC SFP+ Transceiver
SKU: NSN-3147
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista SFP-10G-SRL 10GB BASE-SRL 850nm MMF LC SFP+ Transceiver
SKU: NSN-0690
Condition: New
Shipping: Overnight Options
Warranty: 365 days