Available pin sets at WDW?

[disneybound08]

A colleague is visiting WDW over the march Break and has offered to pick up a pin set for me. Is there anywhere I can see what sets are being sold? And how much they cost? I'd like something that says WDW but if thats hard to find I would settle for something else. Anybody know how easy they are to locate in most souvenir shops? I dont want her wasting a lot of time, just want to give her a general idea of what to look for. Thanks