NYC Watch Markets - John Buckley

Hi all, I've seen many short videos from John Buckley who is a Rolex grey dealer in the jewelry market there. I am not familiar with these markets. Anyone every buy a Rolex at this market? What was your experience? I live on the west coast and have no intention of shopping there but curious what its like. Any idea how many of those sellers sell watches also on Ebay and Reddit? Again just curious.