So I want to start pin trading, but I have no clue what I'm doing. I bought my lanyard, but have no pins yet. I was looking in the Disney store and the pins ranged from $6-$20 each. Then I was looking on eBay and people were selling pins for $25 for 10 or something like that. I don't understand the difference. Are there good pins and bad pins? How do I know how much it's worth? What happens if someone wants to trade with a pin I don't want give up? How do you approach someone about trading? Just looking for tips, so I can get started on my next trip in September.