I have a similar issue; I have a $10 self published book on Amazon and somebody re-listed with an earlier (like 1900!) publication date, so it shows up first when looking for it and it's listed at like $100.
I don't know who can fall for this in my case but I'm sure if they can they have probably done this at scale. When I search in Amazon I see a lot of results with wide range of prices so I'm sure some people are just counting on showing up on results, users being "lazy" and arbitraging the difference between their listing and the cheapest vendor.
I have ordered 2 service manuals on eBay, and both times I got some shitty photocopies of the official manual, yet paid full price for the official manuals. You email the vendors and ask why you got this shitty copy, and they claim it's official, and that they're licensed by the company to reproduce them. So eBay won't do shit.
> The copied book is identical, cover and all, images in the Amazon listing too ... Amazon chose to do nothing.
Amazon will still get paid whether they sell the real book or a knock off, either way. It's not like a small time author has the resources to actually do something about it in court.
I refuse to give money to a business that behaves the way Amazon does.