[ChristianKletzl]

There is no ceiling in place (I need to look into why different books show similar results). For the mentioned book, there's a difference between for how much it is offered and for how much it is bought (if someone wants $100, it doesn't mean that anyone is buying it for that price)

Scanning 44 other book-buying sites, only 3 are buying that book and the price is between $0.12 and $3.97

[donall]

Makes sense. I didn't realize you had multiple sources, but I'm glad you do!