My point, is that you wouldn't do that if you thought the price was around 5k. But then take the example of new technology: you wouldn't want to buy gore-tex s

My point, is that you wouldn't do that if you thought the price was around 5k. But then take the example of new technology: you wouldn't want to buy gore-tex shoes, which would be more expensive than the others, if you didn't know that they were both waterproof and breathable, something you would consider impossible before seeing the ad. Apples M1 is a more recent example: until their marketing/pr blitz hit I couldn't buy a fanless laptop with anywhere decent performance and so because I didn't know it existed, I wouldn't have gone to search for it. You can run a price comparison website for know old things, e.g I use them when I am after something specific. Of course that leaves me the problem of which price comparison site I should use.