https://www.ebay.com/itm/2011-Topps-...8AAOSw95lbGaHC
Just a couple of weeks ago this card was going consistently for 1400 or so. Now suddenly there are a bunch on ebay just listed and already approaching 3K. The one in the link hasn't even been on there for a day.
Similar runup in the basic Update, which is to put it mildly an abundant card even in a 10.
What the heck is this?
And not to single out PWCC, here's another example.
https://www.ebay.com/itm/2011-Topps-...YAAOSwydpbGUyL