Hi there, I just started collecting/trading pins this last year. I never knew this whole experience existed until my husband and I went on a family trip to Disney this last July. I hadn't been to Disney in 18 years. So I was completely clueless to pin trading. I fell in love our last two days there. Now that I've been back home for a while and just looking through pins and such. I'm looking for an explanation as to what these WDI pins are. I collect NBC and Alice pins and I actually have a WDI Sally pin from a pin opp I entered into on Instagram and the package says it's 18.99 retail (I THINK, I don't have it right in front of me) but I checked online and it's being sold for anywhere from 400-600 dollars. So all in all, my question would be Why they're so expensive, and how do people get them outside of just buying them for hundreds of dollars and/or pin opps.