Your search for "BR-SLX9850-10GX72S-M" revealed the following:
NEW Extreme Brocade BR-SLX9850-10GX72S-M 72x 10GB SPP+ Router Line Card
SKU: NSN-1169
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,762.99
• Only 2 remaining
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Extreme Brocade BR-SLX9850-10GX72S-M 72x 10GB SPP+ Router Line Card
SKU: NSB-6400
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,739.99
• Only 2 remaining
Call if you need more