Who is the richest seller on eBay?

Could you please clarify, who exactly are we referring to as the "richest seller" on eBay? Are we talking about an individual or a company? Additionally, how do we define "richest" in this context? Is it based on the total value of goods sold, the seller's personal net worth, or some other metric? Lastly, do we have any recent data or information that could help us accurately identify who this richest seller might be?