When it comes to buying speakers I think people tend to feel comfort about what they're buying when it cost more. If I put a $7000 speaker in front of you and a $20,000 speaker in front of you you'll probably say the $20,000 speaker sounds better even if you haven't heard it.
Speaker manufacturers have product lines and in their descriptions it makes it sound like there might be something more to a more expensive speaker but they never really explained why it cost more money. More expensive drivers a more expensive cabinet more expensive crossovers… OK this is nice but it's not really that much more since materials cost are such a small portion of the overall price. It's simply that people feel more comfortable spending more money.
It's a marketing strategy that's all. Are you secure enough to purchase what may be a better speaker for substantially less? Same thing applies to amplifiers and pre-amplifiers. Hopefully the more money you spend the better the product is but is this really the case and if it is why don't they tell you why it's more expensive? They show a $200,000 speaker at a show which very very few people were buy obviously and somehow this makes it easier and more justifiable for you spend $50,000 on a speaker from their product line. It's a marketing strategy that's all and I'm not sure how good it's working.