Sorry, I thought I posted this at the time! V delayed response to a post several pages back... 
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It's not quite the same though. You bought a book, you got a book, not a piece of cheese or a vacuum cleaner.
What's being disputed, I suppose is more philosophical -- the genre of the book and its associated truth quotient.
Is buying a book you are brought to believe is a substantially true memoir, but which turns out to be a remarkably self-serving fiction about two criminals cosplaying homeless and illness, akin to getting a leg of lamb delivered when you'd ordered a lobster? You open the box immediately in the food delivery, see it's the wrong thing and get onto customer services, who (one hopes) apologise and rectify it.
With a fake 'memoir' it's more complicated.
If you pursue the comparison, in the case of TSP, it's sold as lobster, it looks like lobster, it tastes like lobster, lots of people are talking about what an excellent lobster it is, it wins a prize for being the best lobster, and a film is made about this particularly good lobster.
Only after an investigative reporter gets involved are the buying public made aware that this enormously popular 'lobster' is, I don't know, cat food squished into a shell and masquerading as high-end seafood.
I suppose we also need to factor in the intent of the seller. We know that the intent of the person who put the cat food into the lobster shells was to deceive. What is less clear is the extent of the knowledge of the company that acted as the middleman and did the packaging and advertising. Did they genuinely believe they were selling lobster but failed to do robust enough checks on the product? Or was it a cynical exercise in false advertising?
Is it more like putting a vegetarian certification on a foodstuff which, it turns out, after it's been eaten by millions believing it's a vegetarian product, to contain pork gelatin, isinglass and veal? Or, given the whole CBD nonsense, is it like flogging a miracle 'health' capsule which not only has no active ingredient but brings false hope to seriously ill people? Only of course there are much more stringent checks on the whole food and medicine industry than in the book trade, so it could never happen.
(I now need to go and lie down. There are lobsters literally dancing in front of my eyes...)