Your search for "SFP-1G-SX" revealed the following:
NEW Arista SFP-1G-LX Optical 1 Gigabit BASE-LX Transceiver SFP
SKU: NSN-6609
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper EX-SFP-1GE-SX-ET 1GB BASE-SX 850nm MMF LC SFP Transceiver
SKU: NSH-6952
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper RX-550M-SFP 1GB BASE-SX 850nm MMF LC SFP Transceiver
SKU: NSN-7095
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Fortinet FN-TRAN-SX 1GB BASE-SX 850nm 500m MMF LC SFP Transceiver
SKU: NSB-1533
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme 10051H 1GB BASE-SX 850nm MMF LC SFP Transceiver
SKU: NSN-7132
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7368-SUP-D 7368X4 Quad core CPU, 16GB w/SSD Switch Supervisor Module
SKU: NSB-5435
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days