Your search for "MCX75310AAS-HEAT" revealed the following:
nVidia Mellanox MCX75310AAS-HEAT 1x 200GB OSFP PCIe 5.0 x16 NIC
SKU: NSC-0043
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,149.99
• 36 in stock
Call if you need more
NEW nVidia Mellanox MCX75310AAS-HEAT 1x 200GB OSFP PCIe 5.0 x16 NIC
SKU: NSN-1153
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,292.99
• Only 2 remaining
Call if you need more