Your search for "QSFP-100G-PSM4" revealed the following:
Arista QSFP-100G-SRBD 100GB BASE-BIDI OM3/100m OM4 MMF QSFP28 Transceiver
SKU: NSB-5277
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 366.99
• 65 in stock
Call if you need more
NEW Arista QSFP-100G-SRBD 100GBASE-BIDI 70m OM3/100m OM4 Duplex MMF QSFP28
SKU: NSN-5318
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 374.99
• 49 in stock
Call if you need more
NEW Nvidia Mellanox MMS1C10-CM 100GB BASE-PSM4 1310nm LC QSFP28 Transceiver
SKU: NSN-8605
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 112.99
• Only 2 remaining
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NEW HPE Q8J73A 1310mm SMF MPO 500m QSFP28 Transceiver
SKU: NSN-0926
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 51.99
• Only 2 remaining
Call if you need more
HPE Q8J73A 1310mm SMF MPO 500m QSFP28 Transceiver
SKU: NSB-1698
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 48.99
• Only 2 remaining
Call if you need more
NEW Arista QSFP-100G-SWDM4 100GB BASE-SWDM4 70m OM3/100m Duplex MMF QSFP28
SKU: NSN-0315
Condition: New
Shipping: Overnight Options
Warranty: 365 days