Psychology is a bit of a nuisance. You may think you've completely isolated yourself from marketing gimmicks and equipment sales hype, but that is never really possible. Expectations can have profound effects on our perception of quality. This is true for wine just as much as it is for audio equipment. Yes, there is some downright terrible wine in the world, just like there is some downright terrible audio equipment. There are also bottles that are the epitome of perfection in a certain style, and audio equipment that really does perform up to its price point. As demonstrated in the article linked below, sometimes the differences between good and great gear is exaggerated in our minds.
You can read the article here: http://audioundone.com/loudspeakers_winer