[swarmee]

Another way to research is to see the number of collectors of a player's Basic Topps Set registry versus the ones who try to collect every issue from their playing days, as well as what percent they're gotten completed. There are some OPC lovers who keep waiting for the day their Canadian versions rise up to the value of Topps, but there aren't set collectors vying for them like US Topps st collectors and PSA set registry participants, which is something that drives the high end of the market and sets the rest of the demand.