I may get flamed, but I have to add my 2 cents ......
I have also seen inconsistencies with cast members. I have seen duplicate pins on CM lanyards. I have been told I could only make one trade, two trades or multiple trades by cast members. I accidently made a trade for two pins and I gave a CM a pin that he already had on his lanyard (it was an honest mistake). He followed me out of the store and informed me that he already had the pin on his lanyard. I returned the pin, no problem.
Now, this is where I may get flamed .......
I disagree with everyone concerning the Snow White & the 7 Dwarf pins. Yes, they may be all over the park but according to the rules of Disney, they are "TRADEABLE" pins. If they have the Disney trademark/copyright on the back, they can be traded.
Think about it ..... Parents save for years to take their children to WDW. I'm sure everyone will agree that spending a week at WDW is not cheap, even if you stay off-site. Some people cannot afford to pay $6.50/pin so their children can enjoy the "hobby" of trading. So, they go on-line and purchase "TRADEABLE" Disney pins on E-Bay for $0.60/pin. Yes, they may be all over the park, but have you ever seen a childs face after they trade "one of those pins" for one of their favorite Disney characters?
I hope I have not offended anyone, but I wanted to make sure everyone saw "both sides of the coin". Yes, there are people that can afford to buy pins, instead of "those pins" to trade. However, Disney has made the rules and they are "TRADEABLE" pins.
Okay, I've got the firehose ready ......... flame away!