Your search for "DCS-7504E-BND" revealed the following:
NEW Arista DCS-7504E-BND 7500E Series 7504E Switch Chassis Bundle
SKU: NSN-4811
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7504E-BND 7500E Series 7504E Switch Chassis Bundle
SKU: NSH-7482
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days