If I'm understanding this correctly the cards on the list would show up only on PWCC's Auction Archive, but not on PWCC's Marketprice Research Page, eBay's list of completed auction sales or PSA's Auction Prices Realized page.
I did a little research of my own and found a card that does show up on the last two resources. Towards the bottom of the big list is a 1960 Topps Yastrzemski, PSA 9 that allegedly sold for $19,655 in May 2019.
It doesn't show up on PWCC's Auction Price Research page:
https://www.pwccmarketplace.com/mark...ms_per_page=50
It does however show up both in the completed sales on ebay:
https://www.ebay.com/sch/i.html?_sac...rzemski&_sop=3
and PSA's Auction Prices Realized:
https://www.psacard.com/auctionprice...ues/182146#g=9
Am I misreading this or does this card not belong on the list?