Is there a special or designated place at DLP that pin traders hang out at? I was thinking of bringing some of WDW LE and DS pins with us to DLP for trading and showing. Are cast members at DLP avid pin traders as well.
There is a big Pin Trading cart at the end of Main Street U.S.A and like Bev said, in Disney Village there is a shop with a massive selection.
Also, I remember that when I last stayed in The Disneyland Hotel, there was a Cast Member in there with a big tray and table of pins for sale/swop - lots of people seemed to be trading with him and purchasing some.