Your search for "EX4600-EM-8F" revealed the following:
Juniper EX4600-EM-8F EX4600 Series 8x 10 Gigabit SFP+ Switch Module
SKU: NSH-8043
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 245.99
• Only 2 remaining
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NEW Juniper EX4600-EM-8F EX4600 Series 8x 10 Gigabit SFP+ Switch Module
SKU: NSN-2775
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 289.99
• 22 in stock
Call if you need more
Juniper EX4600-EM-8F QFX5100 Series 8x 10 Gigabit SFP+ Switch Module
SKU: NSB-0150
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 245.99
• Only 2 remaining
Call if you need more
NEW Juniper EX4600-EM-8F QFX5100 Series 8x 10 Gigabit SFP+ Switch Module
SKU: NSN-0241
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 324.99
• 12 in stock
Call if you need more
NEW Juniper QFX5100-24Q-3AFO 24x 40GB QSFP+ 2x Mod Slot Front-to-Back Air Switch
SKU: NSN-1851
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 287.99
• 11 in stock
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NEW Juniper QFX5100-24Q-AFO 24x 40GB QSFP+ 2x Mod Slots Front-to-Back Air Switch
SKU: NSN-2398
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 619.99
• Only 1 remaining
Call if you need more