Ok, I just couldn't resist. I messaged the $600 Applejack seller letting her/him know that not only was Applejack not rare, she was worth about $5-10 in mint condition (according to Summer Hayes' guide), and that the accessories might double her price. I also said that if she really wanted to sell this stuff, then she would have to research the correct prices. (I tried not to come off as snarky, but it was kind of hard because I too am offended by outrageous listings like that.)
Here's what she sent me back:
thanks.
That was it. I hope I didn't cross a line by doing that, but these listings are just unbelievable.