Your search for "DCS-7300-SUP-D" revealed the following:
Arista DCS-7300-SUP-D 7300X Series Switch Supervisor Module w/ SSD
SKU: NSB-5398
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 259.99
• Only 2 remaining
Call if you need more
Arista DCS-7300-SUP 7300 Series Supervisor Switch Module
SKU: NSB-9691
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 337.99
• Only 2 remaining
Call if you need more
Arista DCS-7304-CH 7300X Series 7304 Switch Chassis Only
SKU: NSB-2837
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7308-CH 7300X Series 7308 Switch Chassis Only
SKU: NSB-2646
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7304-CH 7300X Series 7304 Switch Chassis Only
SKU: NSN-8071
Condition: New
Shipping: Overnight Options
Warranty: 365 days