The way you get to the spot you were sent is to go to Amazon (on a desktop, it may be different on a mobile device), select books in the drop down menu, then search for "Standard of Perfection Poultry" and you will get a list of books. Scroll through the list until you find the hardcover book that I linked you to above. It's listed as American Standard of Perfection 2010. It doesn't give a price yet, it just says hardcover. Click on that. That's where it says that it's $502.89. Immediately underneath the price is a spot that says "9 used from $498.93." Click there. That brings up a page that lists all 9 of the same books, from $498 to $682. They're mostly sold by used book stores. They determine a price by looking up the book. When one comes up this expensive, all the different suppliers just pile on and hope for a great sale. The more books listed at this price the more perceived value the book has to potential buyers, and eventually someone buys one, although very few people are that gullible. Here's a direct link to the page:
https://smile.amazon.com/gp/offer-l...?ie=UTF8&condition=used&qid=1593624621&sr=1-5
