Your search for "407-bbzs" revealed the following:
Dell 407-BBZS 25GB BASE-SR 850nm MMF LC SFP28-25G-SR P7D7R SFP+ Transceiver
SKU: NSB-5934
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 239.99
• Only 2 remaining
Call if you need more
NEW Dell 407-BBZS 25GB BASE-SR 850nm MMF LC SFP28-25G-SR P7D7R SFP28 Transceiver
SKU: NSN-0853
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 249.99
• Only 2 remaining
Call if you need more