Your search for "RPS20-E" revealed the following:
Ruckus RPS20-E ICX 7150 PoE 920W AC Front to Back Airflow Power Supply
SKU: NSB-6281
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 606.99
• Only 2 remaining
Call if you need more
NEW Ruckus RPS20-E ICX 7150 PoE 920W AC Front to Back Airflow Power Supply
SKU: NSN-7957
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 851.99
• Only 2 remaining
Call if you need more