FS Applejack has become incredibly hard to find, so those prices aren't as shocking to me. I think she was sold before or right when FiM hit it big and then they stopped producing/selling her. I'm lucky I nabbed her when I did--wish I had grabbed more than one now.
both of my Wal-marks are still pretty much in full stock of the sets they have because a lot of kids in my area already have at least one of the toys or so... Target is the same way and still has some of the Canterlot sets which I need to find out when those will go on sell so I can get them..