Using diamonds as an example - a mall or chain store, due to higher overhead, 99 times out of a 100, cannot sell to you as cheaply as a source that has only one or zero retail outlets. Same holds true for audio stores. The same principles of price sensitivity and markups apply, but the brick and mortar stores have to factor their costs of multiple locations rented, more employee hours, etc into their prices - and either lower their markups to match the online sellers or be too high priced if they don’t.
Stratospheric audio gear prices
"Premium Pricing
Premium pricing is the practice of keeping the price of a product or service artificially high in order to encourage favorable perceptions among buyers, based solely on the price. The practice is intended to exploit the (not necessarily justifiable) tendency for buyers to assume that expensive items enjoy an exceptional reputation or represent exceptional quality and distinction . A premium pricing strategy involves setting the price of a product higher than similar products . This strategy is sometimes also called skim pricing because it is an attempt to "skim the cream" off the top of the market. It is used to maximize profit in areas where customers are happy to pay more, where there are no substitutes for the product, where there are barriers to entering the market, or when the seller cannot save on costs by producing at a high volume. It is also called image pricing or prestige pricing.
Luxury has a psychological association with price premium pricing. The implication for marketing is that consumers are willing to pay more for certain goods and not for others. To the marketer, it means creating a brand equity or value for which the consumer is willing to pay extra. Marketers view luxury as the main factor differentiating a brand in a product category."
Source: Boundless. “Market Share.” Boundless Business Boundless, 26 May. 2016. Retrieved 07 Feb. 2017 from https://www.boundless.com/business/textbooks/boundless-business-textbook/product-and-pricing-strateg...