There were a lot of people in the "Mickey Pumpkin for Stitch Hat" room last night. I don't think any Stitch hats changed hands, however.
If I had a stitch hat, I personally wouldn't trade it for the pumpkin... the hat is worth more "value" as you have to pay to get one to begin with. While you're paying to get into Disneyland to get the pumpkin, there is more value on the hat. See what I mean?