Could someone suggest a book, article or chapter of book that applies an austrian analysis to industries with percentage fees instead of unit "prices" (e.g. real estate brokerages that charge a percentage of sale price, injury lawyers that charge percentage of settlement and mutual funds that charge a percentage of assets). I would like to read an austrian analysis of supply, demand, pricing, marginal unit value, etc, etc in these types of industries. I am particularly interested in the notion that "price" is directly linked to value of the "product" in these industries (buyer wants to pay a higher fee because fee is linked directly to total value of the seller's "product"). Any suggested reading (or analysis) would be greatly appreciated. Thank you.