Your search for "SFP-25G-SR" revealed the following:
Arista SFP-25G-MR-XSR 10/25GB 850nm MMF 300m SFP Transceiver
SKU: NSB-2184
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Dell 407-BCBF 25GB BASE-SR 850nm 91C9R SFP28 Transceiver
SKU: NSB-1297
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL484A 25GB BASE-SR LC MMF Optical SFP28 Transceiver
SKU: NSN-5895
Condition: New
Shipping: Overnight Options
Warranty: 365 days