Your search for "5420m-48w" revealed the following:
Extreme 5420M-48W-4YE 48x 1GB PoE++ RJ45 4x 25GB SFP28 Switch
SKU: NSB-3004
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 3,937.99
• Only 2 remaining
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NEW Extreme 5420M-48W-4YE 48x 1GB PoE RJ45 4x 25GB SFP28 Switch
SKU: NSN-8592
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 4,025.99
• Only 2 remaining
Call if you need more