Your search for "E100G-QSFP28" revealed the following:
NEW Ruckus E100G-QSFP28-SR4 100GB BASE-SR4 850nm OM4 MMF QSFP28 Transceiver
SKU: NSN-8895
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 857.99
• Only 1 remaining
Call if you need more
Ruckus E100G-QSFP28-SR4 100GB BASE-SR4 850nm OM4 MMF QSFP28 Transceiver
SKU: NSB-1487
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 822.99
• Only 1 remaining
Call if you need more
Nvidia Mellanox MMA1B00-E100 100GB BASE-SR4 850nm MMF MPO QSFP28 Transceiver
SKU: NSB-3083
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Mellanox MMA1B00-E100 100GB BASE-SR4 850nm MMF MPO QSFP28 Transceiver
SKU: NSN-8606
Condition: New
Shipping: Overnight Options
Warranty: 365 days