Your search for "DS-X9710-FAB1" revealed the following:
Cisco DS-X9710-FAB1 MDS 9700 Series Crossbar Switching Fabric-1 Module
SKU: NSH-4196
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 79.99
• 13 in stock
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NEW Cisco DS-X9710-FAB1 MDS 9700 Series Crossbar Switching Fabric-1 Module
SKU: NSN-1521
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 127.99
• Only 2 remaining
Call if you need more