We don't get any... i wish we did as i love using those purple passes! There used to be a website swatrade.com where people could list tickets they won on interline carriers that they wanted to trade for purples (reds back then) or greens. I tried to look the site up but it redirects now. Maybe talk to someone at HDQ or the Pass Bureau? Heaps of ppl win those tix and want to trade, they just don't know who to trade with...