Amazon is a micro economy all it's own. Many ask for as much as they can get, and then come down little by little if someone else is offering the same thing.
I used to offer shrimp on Amazon as a seller for a REAL market price, not that inflated crap. Then InvertObsession somehow started hijacking my ads and playing dirty by placing his name/title/description into what I had posted-making it so I didn't have an ad anymore. This went on at least 3 times in ALL my shrimp ads. I contacted customer support several times, but they said it has something to do with a customer matrix and as long as he was selling more than me he could take over my ads- even if I had a password- and I couldn't change it back. I even paid for codes, but it made no difference. Man was I pissed. I told support they could shove it and pulled all my ads.