There seems to be a scam where product pages are sold off to host a completely different item. They usually have lots of 5 star reviews and high search rank but the reviews are all talking about something different than what's now being sold.
I thought it was a bug at first but I've seen this too often. I don't understand how Amazon doesn't know this is happening, or why it even lets it happen in the first place. Product pages should be immutable.