CNBC story on major auction companies and their lucrative 2021 sales
Not necessarily sports/vintage cards related, but it shows the overall collectibles market
"Christie’s on Monday reported total sales of $7.1 billion for 2021, the highest total in five years. Sotheby’s earlier reported total sales of $7.3 billion, its best showing in the company’s 277-year history, and Phillips said its sales rose to $1.2 billion this year, also a company record.
“Every single category is outperforming,” said Guillaume Cerutti, CEO of Christie’s."
https://www.cnbc.com/2021/12/20/auct...ollectors.html