Your search for "qsfp-40g-lrl4" revealed the following:
Arista QSFP-40G-LRL4 40GB BASE-LRL4 850nm SMF QSFP+ Transceiver
SKU: NSB-5338
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 48.99
• Only 2 remaining
Call if you need more
NEW Arista QSFP-40G-LRL4 40GB BASE-LRL4 850nm SMF QSFP+ Transceiver
SKU: NSN-6111
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 89.99
• Only 2 remaining
Call if you need more
Arista QSFP-40G-LR4 BASE-LR4 40GB 1310nm Long Reach SMF LC QSFP+ Transceiver
SKU: NSH-7515
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 119.99
• Only 1 remaining
Call if you need more
NEW Arista QSFP-40G-LR4 BASE-LR4 40GB 1310nm Long Reach SMF LC QSFP+ Transceiver
SKU: NSN-8262
Condition: New
Shipping: Overnight Options
Warranty: 365 days